Ehsan Roohi - Publications

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Symmetrized generalized and simplified bernoulli-trials collision schemes in DSMC

Maryam Javani ، Ehsan Roohi ، Stefan Stefanov

Computers and Fluids

International Journal 2024 March Volume (272) Pages (106188-)

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Large Eddy Simulation of Cavitating Flow around a Pitching Hydrofoil

Ehsan Roohi ، Maziyar Ghasemnejad

Ocean Engineering

International Journal 2024 January Volume (292) No (1) Pages (116547-116547)

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Large Eddy Simulations of Cavitation around a Pitching-Plunging Hydrofoil

Ehsan Roohi ، Seyed Ali Alavi

Physics of Fluids

International Journal 2023 December Volume (35) No (12) Pages (125102-125102)

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Inversion in Binary Gas Mixtures in Rarefied Flow Conditions: Direct Simulation Monte Carlo Solution and Comparison with the Analytical Solutions at Free Molecular Regime

Moslem Sabouri ، Ehsan Roohi

Physics of Fluids

International Journal 2023 July Volume (35) No (7) Pages (072009-072009)

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On the effects of hybrid surface wettability on the structure of cavitating flow using implicit large eddy simulation

Ehsan Roohi ، Seyed Mahmoud Mousavi

Journal of the Taiwan Institute of Chemical Engineers

International Journal 2023 July Volume (148) No (156) Pages (104828-104856)

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A comprehensive review on micro- and nano-scale gas flow effects: Slip-jump phenomena, Knudsen paradox, thermally-driven flows, and Knudsen pumps

، Ehsan Roohi ، Stefan Stefanov

Physics Reports

International Journal 2023 January Volume (997) No (1) Pages (1-60)

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Numerical Study of Gas Flow in Super Nanoporous Materials Using the Direct Simulation Monte-Carlo Method

VAHID SHARIATI ، Ehsan Roohi ، Amin Ebrahimi

Micromachines

International Journal 2023 January Volume (14) No (1) Pages (139-139)

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Identification of frequency modes and spectral content for noise suppression: Cavitation flow over 3-D hydrofoil with sinusoidal leading edge

Mohammad Reza Pendar ، Seyed Ali Alavi ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2022 November Volume (34) No (6)

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On the rarefied thermally-driven flows in cavities and bends

Mostafa Moosivand ، Ehsan Roohi

Fluids

International Journal 2022 November Volume (7) No (11) Pages (354-354)

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A novel transient-adaptive subcell algorithm with a hybrid application of different collision techniques in direct simulation Monte Carlo (DSMC)

Stefan Stefanov ، Ehsan Roohi ، Ahmad Shojasani

Physics of Fluids

International Journal 2022 September Volume (34) No (9) Pages (092003-092003)

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A study on micro-step flow using a hybrid direct simulation Monte Carlo–Fokker–Planck approach

Ehsan Roohi ، َAmirmehran Mahdavishahri

Physics of Fluids

International Journal 2022 June Volume (34) No (6)

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On the nonlinear thermal stress, thermal creep, and thermal edge flows in triangular cavities

Mostafa Moosivand ، Ehsan Roohi

Physics of Fluids

International Journal 2022 May Volume (34) No (5)

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A symmetrized and simplified Bernoulli trial collision scheme in direct simulation Monte Carlo

Elmira Taheri ، Ehsan Roohi ، Stefan Stefanov

Physics of Fluids

International Journal 2022 January Volume (34) No (1)

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Flow and thermal field investigation of rarefied gas in a trapezoidal micro/nano-cavity using DSMC

Mostafa Zakeri ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2021 July Volume (32) No (12)

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Generalized description of the Knudsen layer thickness in rarefied gas flows

Hassan Akhlaghi ، Ehsan Roohi

Physics of Fluids

International Journal 2021 June Volume (33) No (6)

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Assessment of anisotropic minimum-dissipation (AMD) subgrid-scale model: Gently-curved backward-facing step flow

AMIR POUYAN ZAHIRI ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2021 May Volume (32) No (5) Pages (2150068-2150098)

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Homogeneous Relaxation and Shock Wave Problems: Assessment of the Simplified and Generalized Bernoulli Trial Collision Schemes

Ahmad Shojasani ، Ehsan Roohi ، Stefan Stefanov

Physics of Fluids

International Journal 2021 March Volume (33) No (3) Pages (032004-032004)

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Binary gas mixtures separation using microscale radiometric pumps

Ali Lotfian ، Ehsan Roohi

International Communication in Heat and Mass Transfer

International Journal 2021 February Volume (121) No (3) Pages (105061-105061)

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Evaluation of the generalized bernoulli trial-transient adaptive subcell (GBT-TAS) collision scheme in treating rarefied gas flows

Ahmad Shojasani ، Ehsan Roohi ، Stefan Stefanov

Computers and Fluids

International Journal 2020 December Volume (213) No (3) Pages (104740-104740)

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Prediction of peak and termination of novel coronavirus COVID-19 epidemic in Iran

Sepehr RafieeNasab ، AMIR POUYAN ZAHIRI ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2020 November Volume (31) No (11) Pages (2050152-2050152)

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Numerical investigation of wave interactions in an experimental wave-energy converter using OpenFOAM

Ali Sangtarash ، Ehsan Roohi

Proceedings of the Institution of Mechanical Engineers - Part A

International Journal 2020 November Volume (235) No (5) Pages (1205-1224)

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A novel hybrid DSMC-Fokker Planck algorithm implemented to rarefied gas flows

َAmirmehran Mahdavishahri ، Ehsan Roohi

Vacuum

International Journal 2020 November Volume (181) No (1) Pages (109736-109736)

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LES study of unsteady cavitation characteristics of a 3-D hydrofoil with wavy leading edge

Mohammad Reza Pendar ، ESMAEIL ESMAEILIFAR ، Ehsan Roohi

International Journal of Multiphase Flow

International Journal 2020 November Volume (132) No (1) Pages (103415-10341527)

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Numerical analysis of nonlinear thermal stress flow between concentric elliptical cylinders

Sepehr RafieeNasab ، Ehsan Roohi ، Ali Reza Teymourtash

Physics of Fluids

International Journal 2020 October Volume (32) No (10)

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Thermal and hydraulic performance analysis of a heat sink with corrugated channels and nanofluids

Ehsan Roohi ، BENYAMIN NARANJANI ، Amin Ebrahimi

Journal of Thermal Analysis and Calorimetry

International Journal 2020 September Volume (146) No (6) Pages (2549-2560)

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Shear-driven micro/nano flows simulation using Fokker Planck approach: Investigating accuracy and efficiency

Vahid RezapourJaghargh ، َAmirmehran Mahdavishahri ، Ehsan Roohi

Vacuum

International Journal 2020 February Volume (172) No (2) Pages (109065-109065)

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Direct Simulation Monte Carlo investigation of fluid characteristics and gas transport in porous microchannels

VAHID SHARIATI ، Mohammadhassan Ahmadian ، Ehsan Roohi

Scientific Reports

International Journal 2019 November Volume (9) No (1)

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LES investigation of sheet-cloud cavitation around a 3-D twisted wing with a NACA 16012 hydrofoil

Abolfazl Movahedian ، Mahmoud Pasandidehfard ، Ehsan Roohi

Ocean Engineering

International Journal 2019 November Volume (192) Pages (106547-106559)

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Comprehensive assessment of newly-developed slip-jump boundary conditions in high-speed rarefied gas flow simulations

Nam T.P.Le ، Ehsan Roohi ، Thoai N.Tran

Aerospace Science and Technology

International Journal 2019 August Volume (91) Pages (656-668)

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A dusty gas model-direct simulation Monte Carlo algorithm to simulate flow in micro-porous media

Ehsan Roohi ، Mohammadhassan Ahmadian ، Ali Reza Teymourtash ، Stefan Stefanov

Physics of Fluids

International Journal 2019 June Volume (31) No (6)

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Wavelet analysis and frequency spectrum of cloud cavitation around a sphere

Arman Kolahan ، Ehsan Roohi ، Mohammad Reza Pendar

Ocean Engineering

International Journal 2019 June Volume (182) No (3) Pages (235-247)

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Radiometric flow in periodically patterned channels: fluid physics and improved configurations

Ali Lotfian ، Ehsan Roohi

Journal of Fluid Mechanics

International Journal 2019 February Volume (860) No (1) Pages (544-576)

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Anisotropic Minimum-Dissipation (AMD) Subgrid-Scale Model Implemented in OpenFOAM: Verification and Assessment in Single-phase and Multi-phase Flows

AMIR POUYAN ZAHIRI ، Ehsan Roohi

Computers and Fluids

International Journal 2019 February Volume (180) No (2) Pages (1-23)

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Rarefied transitional flow through diverging nano- and microchannels: A TRT lattice Boltzmann study

Soroush Fallah Kharmiani ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2018 November Volume (15) No (11) Pages (1-23)

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Ballistic and Collisional Flow Contributions to Anti-Fourier Heat Transfer in Rarefied Cavity Flow

H. Akhlaghi ، Ehsan Roohi ، S. Stefanov

Scientific Reports

International Journal 2018 September Volume (8) No (9) Pages (135331-1353313)

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Evaluating the Modulated Gradient Model in Large-Eddy Simulation of Channel Flow with OpenFOAM

Elyas Larkermani ، Ehsan Roohi ، Fernando Porté-Agel

Journal of Turbulence

International Journal 2018 July Volume (19) No (7) Pages (600-620)

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On the vortical characteristics and cold-to-hot transfer of rarefied flow in a lid-driven isosceles orthogonal triangular cavity with isothermal walls

Ehsan Roohi ، Vahid Shahabi ،

International Journal of Thermal Sciences

International Journal 2018 April Volume (125) No (3) Pages (381-394)

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Cavitation characteristics around a sphere: An LES investigation

Mohammad Reza Pendar ، Ehsan Roohi

International Journal of Multiphase Flow

International Journal 2018 February Volume (98) No (1) Pages (1-23)

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A generalized form of the Bernoulli Trial collision scheme in DSMC: Derivation and evaluation

Ehsan Roohi ، ، Ahmad Shojasani ، Hossein Ejraei

Journal of Computational Physics

International Journal 2018 February Volume (354) No (3) Pages (476-492)

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On the consequences of successively repeated collisions in no-time-counter collision scheme in DSMC

، Ehsan Roohi

Computers and Fluids

International Journal 2018 January Volume (161) No (3) Pages (23-32)

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On the thermally-driven gas flow through divergent micro/nanochannels

Mohammad Sajjad Mozaffari ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2017 December Volume (28) No (12) Pages (1750143-175014322)

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Evaluation of New Collision-Pair Selection Models in DSMC

، Ehsan Roohi

Journal of Statistical Mechanics: Theory and Experiment

International Journal 2017 October Volume (2017) No (10) Pages (1032051-10320520)

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Regulation of anti-Fourier heat transfer for non-equilibrium gas flows through micro/nanochannels

Ehsan Roohi ، Mojtaba Balaj ،

International Journal of Thermal Sciences

International Journal 2017 August Volume (118) No (3) Pages (24-39)

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Evaluation of the SBT-TAS collision scheme on treating unsteady flows

Ehsan Roohi ، Moein Madani

European Journal of Mechanics B-Fluids

International Journal 2017 August Volume (64) No (3) Pages (17-29)

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On the convergence of the simplified Bernoulli trial collision scheme in rarefied Fourier flow

Elmira Taheri ، Ehsan Roohi ،

Physics of Fluids

International Journal 2017 June Volume (29) No (6) Pages (062003-6200312)

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Knudsen pump inspired by Crookes radiometer with a specular wall

، ، Vahid Shahabi ، Ehsan Roohi

Physical Review Fluids

International Journal 2017 April Volume (2) No (3) Pages (334011-3340118)

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DSMC Investigation of Rarefied Gas Flow through Diverging Micro/Nano-channels

Ehsan Roohi ، Amin Ebrahimi

Microfluidics and Nanofluidics

International Journal 2017 February Volume (21) No (2) Pages (181-1812)

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Thermally induced gas flows in ratchet channels with diffuse and specular boundaries

Vahid Shahabi ، ، Ehsan Roohi ،

Scientific Reports

International Journal 2017 February Volume (7) No (1) Pages (414121-4141214)

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Collision partner selection schemes in DSMC: From micro/nano flows to hypersonic flows

Ehsan Roohi ،

Physics Reports

International Journal 2016 October Volume (656) No (3) Pages (1-38)

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Heat transfer and entropy generation in a microchannel with longitudinal vortex generators using nanofluids

Amin Ebrahimi ، Amin Sabaghan ، ، Ehsan Roohi

Energy

International Journal 2016 May Volume (101) No (4) Pages (190-201)

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Nanofluid flow and heat transfer in a microchannel with longitudinal vortex generators: Two-phase numerical simulation

Amin Sabaghan ، Mojtaba Edalatpour ، Mohammad Charjouei Moghadam ، Ehsan Roohi ، Hamid Niazmand

Applied Thermal Engineering

International Journal 2016 May Volume (100) No (5) Pages (179-189)

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Flow and thermal fields investigation in divergent micro/nano channels

Amin Ebrahimi ، Ehsan Roohi

Journal of Thermal Engineering

International Journal 2016 April Volume (2) No (2) Pages (709-714)

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Investigation of cavitation around 3D hemispherical head-form body and conical cavitators using different turbulence and cavitation models

Ehsan Roohi ، Mohammad Reza Pendar

Ocean Engineering

International Journal 2016 January Volume (112) No (2) Pages (287-306)

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Simulation of ThreeDimensional Cavitation behind a Disk using Various Turbulence and Mass Transfer Models

Ehsan Roohi ، Mohammad Reza Pendar ، Amin Rahimi

Applied Mathematical Modelling

International Journal 2016 January Volume (40) No (1) Pages (542-564)

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Numerical study of flow patterns and heat transfer in mini twisted oval tubes

Amin Ebrahimi ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2015 December Volume (26) No (12) Pages (1550140-1550140)

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A Novel Algorithm for Implementing Specified Wall Hat Flux in DSMC: Application to Micro/Nano Flows and Hypersonic Flows

، Ehsan Roohi

Computers and Fluids

International Journal 2015 December Volume (127) No (1) Pages (78-101)

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A new form of the second order temperature jump boundary condition for the low-speed nanoscale and hypersonic rarefied gas flow simulations

، Ehsan Roohi

International Journal of Thermal Sciences

International Journal 2015 December Volume (98) No (12) Pages (51-59)

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DSMC simulation of hypersonic flows using an improved SBT-TAS technique

Bijan Goshayeshi ، Ehsan Roohi ،

Journal of Computational Physics

International Journal 2015 December Volume (303) No (1) Pages (28-44)

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A novel simplified Bernoulli trials collision scheme in the direct simulation Monte Carlo with intelligence over particle distances

Ehsan Roohi ، Bijan Goshayeshi ،

Physics of Fluids

International Journal 2015 November Volume (27) No (10) Pages (107104-10710416)

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Detailed Investigation of Flow and Thermal Field in Micro/Nano Nozzle using Simplified Bernoulli Trial (SBT) collision Scheme in DSMC

Seyed Ali Saadati ، Ehsan Roohi

Aerospace Science and Technology

International Journal 2015 August Volume (46) No (11) Pages (236-255)

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Investigation of cold-to-hot transfer and thermal separation zone through nano step geometries

َAmirmehran Mahdavishahri ، Ehsan Roohi

Physics of Fluids

International Journal 2015 July Volume (27) No (7) Pages (072002-7200214)

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Investigation of Different Droplet Formation Regimes in a T-junction Microchannel Using the VOF Technique in OpenFOAM

Shima Malekzadeh ، Ehsan Roohi

Microgravity Science and Technology

International Journal 2015 July Volume (27) No (3) Pages (231-243)

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Aircraft Propulsion

Ehsan Roohi

AIAA Journal

International Journal 2015 June Volume (53) No (6) Pages (1722-1722)

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Rarefied gas flow simulations of NACA 0012 airfoil and sharp 25–55-deg biconic subject to high order nonequilibrium boundary conditions in CFD

، Ahmad Shojasani ، Ehsan Roohi

Aerospace Science and Technology

International Journal 2015 May Volume (41) No (1) Pages (274-288)

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Low Mach number slip flow through diverging microchannel

، ، ، ، Amin Ebrahimi ، Ehsan Roohi

Computers and Fluids

International Journal 2015 May Volume (111) No (4) Pages (46-61)

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Effects of shear work on non-equilibrium heat transfer characteristics of rarefied gas flows through micro/nanochannels

Mojtaba Balaj ، Ehsan Roohi ،

International Journal of Heat and Mass Transfer

International Journal 2015 April Volume (83) No (3) Pages (69-74)

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Numerical investigation of thermoacoustic refrigerator at weak and large amplitudes considering cooling effect

Ali Namdar Budlo ، Ali Kianifar ، Ehsan Roohi

Cryogenics

International Journal 2015 April Volume (67) No (5) Pages (36-44)

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Rarefied gas flow behavior in micro/nanochannels under specified wall heat flux

Mojtaba Balaj ، ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2015 April Volume (26) No (8) Pages (1550087-1550087)

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Numerical study of liquid flow and heat transfer in rectangular microchannel with longitudinal vortex generators

Amin Ebrahimi ، Ehsan Roohi ،

Applied Thermal Engineering

International Journal 2015 January Volume (78) No (3) Pages (576-583)

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Three dimensional investigation of the shock train structure in a convergent–divergent nozzle

Seyed Mahmood Mousavi ، Ehsan Roohi

Acta Astronautica

International Journal 2014 December Volume (105) No (1) Pages (117-127)

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DSMC simulation of micro/nano flows using SBT–TAS technique

Ali Amiri Jaghargh ، Ehsan Roohi ، ، Hassan Nami ، Hamid Niazmand

Computers and Fluids

International Journal 2014 October Volume (102) No (1) Pages (266-276)

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Wall heat transfer effects on the hydro/thermal behaviour of Poiseuille flow in micro/nanochannels

، Ehsan Roohi ، Mojtaba Balaj ،

Physics of Fluids

International Journal 2014 September Volume (26) No (9) Pages (092002-9200212)

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Investigation of aerodynamic characteristics of rarefied flow around NACA 0012 airfoil using DSMC and NS solvers

Ahmad Shojasani ، Ehsan Roohi ، Mohsen Kahrom ،

European Journal of Mechanics B-Fluids

International Journal 2014 September Volume (48) No (3) Pages (59-74)

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Heat transfer and fluid characteristics of rarefied flow in thermal cavities

Ehsan Yazdanpanah Moghadam ، Ehsan Roohi ، Javad Abolfazli Esfahani

Vacuum

International Journal 2014 September Volume (109) No (10) Pages (333-340)

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Extension of a second order velocity slip/temperature jump boundary condition to simulate high speed micro/nanoflows

Seyed Ali Rooholghodos ، Ehsan Roohi

Computers and Mathematics with Applications

International Journal 2014 July Volume (67) No (11) Pages (2029-2040)

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Thermal rarefied gas flow investigations through micro/nano backward-facing step: Comparison of DSMC and CFD subject to hybrid slip and jump boundary conditions

Amirmehran Mahdavi ، ، Ehsan Roohi ،

Numerical Heat Transfer Part A: Applications

International Journal 2014 June Volume (66) No (7) Pages (733-755)

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Large Eddy Simulation of Shock Train in a Convergent- Divergent Nozzle

Seyed Mahmood Mousavi ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2014 April Volume (25) No (4) Pages (14500031-145000327)

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Study of Physical Aspects of Rarefied Gas Flow Through Micro/Nano Scale Channels Using DSMC

Abdolrasoul Rangrazi ، Ehsan Roohi ،

Arabian Journal for Science and Engineering

International Journal 2014 March Volume (39) No (3) Pages (2331-2338)

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A thorough study on thermal mass flux of rarefied flow through micro/nanochannels

، Ehsan Roohi ، Mojtaba Balaj

Applied Physics Letters

International Journal 2014 February Volume (104) No (7) Pages (073109-731095)

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Mass flow rate prediction of pressure–temperature-driven gas flows through micro/nanoscale channels

، Ehsan Roohi

Continuum Mechanics and Thermodynamics

International Journal 2014 January Volume (26) No (1) Pages (67-78)

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Investigation of convective heat transfer through constant wall heat flux micro/nano channels using DSMC

Mojtaba Balaj ، Ehsan Roohi ، ،

International Journal of Heat and Mass Transfer

International Journal 2014 January Volume (71) No (1) Pages (633-638)

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A hybrid DSMC/Navier–Stokes frame to solve mixed rarefied/nonrarefied hypersonic flows over micro-obstacles/nano-obstacles

، Ehsan Roohi

International Journal for Numerical Methods in Fluids

International Journal 2013 November Volume (72) No (9) Pages (937-966)

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Detailed investigation of hydrodynamics and thermal behavior of nano/micro shear driven flow using DSMC

Omid Ejtehadi ، Ehsan Roohi ، Javad Abolfazli Esfahani

Scientia Iranica

International Journal 2013 August Volume (20) No (4) Pages (1228-1240)

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PREDICTING CONTINUUM BREAKDOWN OF RAREFIED MICRO/NANO FLOWS USING ENTROPY AND ENTROPY GENERATION ANALYSIS

Hamid Niazmand ، Alireza Mohammadzadeh ، Ehsan Roohi

International Journal of Modern Physics C

International Journal 2013 August Volume (24) No (5) Pages (1350029-1350029)

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Hydrodynamic behaviour of micro/nanoscale Poiseuille flow under thermal creep condition

، Mojtaba Balaj ، Ehsan Roohi

Applied Physics Letters

International Journal 2013 August Volume (103) No (7) Pages (073108-731085)

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DSMC Simulation of Low Knudsen Micro/Nano Flows using Small Number of Particles per Cells

Ali Amiri Jaghargh ، Ehsan Roohi ، Hamid Niazmand ،

Journal of Heat Transfer

International Journal 2013 August Volume (135) No (1) Pages (1010081-1010088)

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Direct simulation Monte Carlo investigation of mixed supersonic–subsonic flow through micro-/nano-scale channels

، Mojtaba Balaj ، Ehsan Roohi

Physica Scripta

International Journal 2013 July Volume (88) No (1) Pages (15401-15401)

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Numerical simulation of cavitation around a two-dimensional hydrofoil using VOF method and LES turbulence model

Ehsan Roohi ، Amirpooyan Zahiri ، Mahmoud Pasandidehfard

Applied Mathematical Modelling

International Journal 2013 June Volume (37) No (9) Pages (6469-6488)

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Second Law Analysis of Micro/Nano-Couette FlowUsingDirect Simulation Monte Carlo Method

Javad Abolfazli Esfahani ، Omid Ejtehadi ، Ehsan Roohi

International Journal of Exergy-IJEX

International Journal 2013 March Volume (13) No (3) Pages (320-342)

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Applying a hybrid DSMC/Navier–Stokes frame to explore the effect of splitter catalyst plates in micro/nanopropulsion systems

، Ehsan Roohi

Sensors and Actuators A: Physical

International Journal 2013 January Volume (189) No (1) Pages (409-419)

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A Parallel DSMC Investigation of Monatomic/Diatomic Gas Flow in Micro/Nano Cavity

Alireza Mohammadzadeh ، Ehsan Roohi ، Hamid Niazmand

Numerical Heat Transfer Part A: Applications

International Journal 2013 January Volume (63) No (1) Pages (305-325)

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A new iterative wall heat flux specifying technique in DSMC for heating/cooling simulations of MEMS/NEMS

، Ehsan Roohi ،

International Journal of Thermal Sciences

International Journal 2012 September Volume (59) No (3) Pages (111-125)

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Recommendations on performance of parallel DSMC algorithm in solving subsonic nanoflows

Ehsan Roohi ،

Applied Mathematical Modelling

International Journal 2012 May Volume (36) No (5) Pages (2314-2321)

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Thermal and second-law analysis of a micro- or nanocavity using direct-simulation Monte Carlo

Alireza Mohammadzadeh ، Ehsan Roohi ، Hamid Niazmand ، ،

Physical Review E

International Journal 2012 May Volume (85) No (5) Pages (1-11)

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Investigation of basic molecular gas structural effects on hydrodynamics and thermal behaviors of rarefied shear driven micro/nano flow using DSMC

Omid Ejtehadi ، Ehsan Roohi ، Javad Abolfazli Esfahani

International Communication in Heat and Mass Transfer

International Journal 2012 January Volume (39) No (3) Pages (439-448)

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DSMC simulation of subsonic flow through nanochannels and micro/nano backward-facing steps

، Ehsan Roohi

International Communication in Heat and Mass Transfer

International Journal 2011 December Volume (38) No (10) Pages (1443-1448)

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Application of Homotopy and Homotopy Perturbation Methods to Differential Equations of Heat Transfer and Shear Deformation of Beams

، Ehsan Roohi ، ،

Applied Mathematics Sciences

International Journal 2011 May Volume (5) No (1) Pages (1051-1063)

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Study of Supersonic-Subsonic Gas Flows through Micro-Nano Scale Nozzles Using Unstructured DSMC Solver

، Ehsan Roohi

Microfluidics and Nanofluidics

International Journal 2011 January Volume (10) No (2) Pages (321-335)

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An open source, parallel DSMC code for rarefied gas flows in arbitrary geometries

، Ehsan Roohi ،

Computers and Fluids

International Journal 2010 October Volume (39) No (10) Pages (2078-2089)

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DSMC Solution of Subsonic Flow through Micro-Nano Scale Channels

Ehsan Roohi ،

Journal of Heat Transfer

International Journal 2009 September Volume (131) No (9) Pages (92402-92402)

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Extending the Navier–Stokes solutions to transition regime in two-dimensional micro- and nanochannel flows using information preservation scheme

، Ehsan Roohi

Physics of Fluids

International Journal 2009 August Volume (21) No (1) Pages (82001-82001)

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Application of the homotopy method for analytical solution of non-Newtonian channel flows

، ، Ehsan Roohi

Physica Scripta

International Journal 2009 May Volume (79) No (6) Pages (065009-65009)

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Conceptual linearization of Euler governing equations to solve high speed compressible flow using a pressure‐based method

، ، Ehsan Roohi

Numerical Methods for Partial Differential Equations

International Journal 2008 June Volume (24) No (2) Pages (583-604)

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Transient simulations of cavitating flows using a modified volume-of-fluid (VOF) technique

Mohammad Passandideh-Fard ، Ehsan Roohi

International Journal of Computational Fluid Dynamics

International Journal 2008 January Volume (22) No (2) Pages (97-114)

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Application of the homotopy perturbation method to linear and nonlinear 4th-order boundary value problems

Ehsan Roohi ، ،

Physica Scripta

International Journal 2008 January Volume (77) No (1) Pages (55004-55004)

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On The Convergence of the Symmetrized and Simplified Bernoulli Trial (SSBT) Collision Scheme In Shock Wave Problem

Ehsan Roohi - Maryam Javani - Elmira Taheri

RGD32

International Conferences | 2022-07-11

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Large-eddy simulation of flow around a sphere: Comparing cavitating and non-cavitating conditions

Ehsan Roohi - Elmira Taheri - Mohammad Reza Pendar

The 27th Annual International Conference of Iranian Society of Mechanical Engineers-ISME2019

International Conferences | 2019-04-30

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Periodically Patterned Radiometric Pumps: Novel configurations and further application

Ali Lotfian - Ehsan Roohi - Stefan Stefanov

31st International Symposium on Rarefied Gas Dynamics (RGD31)

International Conferences | 2018-07-23

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Investigation of Rarefied Gas Flow in Micro/Nano Cavity by Fokker Planck Approach

Vahid RezapourJaghargh - َAmirmehran Mahdavishahri - Ehsan Roohi

بیست و ششمین همایش سالانه بین المللی انجمن مهندسان مکانیک ایران

International Conferences | 2018-04-24

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KNUDSEN PUMP WITH SPECULAR AND DIFFUSE WALLS

T. Baier - S. Hardt - Vahid Shahabi - Ehsan Roohi

5th European Conference on Microfluidics – μFlu18 3rd European Conference on Non-Equilibrium Gas Flows – NEGF18

International Conferences | 2018-02-28

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A THOROUGH EVALUATION OF THE FOKKER-PLANCK KINETIC MODEL IN THE COUETTE FLOW

Vahid RezapourJaghargh - َAmirmehran Mahdavishahri - Ehsan Roohi

17th Conference On Fluid Dynamics, fd2017, Aug, 27-29

International Conferences | 2017-08-27

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A Generalized Form of the Simplified Bernoulli Trial Collision Scheme Applied to Shock Waves

Ehsan Roohi - Stefan Stefanov

31st International Symposium on Shock Waves

International Conferences | 2017-07-09

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ON THE EFFICIENT CONFIGURATIONS FOR RADIOMETRIC PUMPS

Ehsan Roohi - Ali Lotfian - Vahid Shahabi

MIGRATE - 2017 2nd MIGRATE Workshop & Summer School

International Conferences | 2017-06-26

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EVALUATION OF WALL HEAT FLUX BOUNDARY CONDITION IN DSMC IMPLEMENTED IN OPENFOAM

Ehsan Roohi - َAmirmehran Mahdavishahri - VAHID SHARIATI - Craig White

MIGRATE - 2017 2nd MIGRATE Workshop & Summer School

International Conferences | 2017-06-26

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GENERALIZED BERNOULLI TRIAL COLLISION SCHEME IN DSMC APPLIED TO NANOCAVITY FLOW

Ehsan Roohi - Ahmad Shojasani - Stefan Stefanov

MIGRATE - 2017 2nd MIGRATE Workshop & Summer School

International Conferences | 2017-06-26

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Gas Separation Between Asymmetrically Structured Walls

Ehsan Roohi - Ali Lotfian - Vahid Shahabi

بیست و پنجمین کنفرانس مکانیک

International Conferences | 2017-05-02

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Evaluation of the Anisotropic Minimum-Dissipation (AMD) Subgrid Scale Model in Treating Channel Flows Using OpenFOAM

Ehsan Roohi - Elyas Larkermani - AMIR POUYAN ZAHIRI

بیست و پنجمین کنفرانس مکانیک

International Conferences | 2017-05-02

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Evaluation of a New Collision Partner Selection Scheme in the Framework of the Direct Simulation Monte Carlo (DSMC)

Ehsan Roohi - Hossein Ejraei - Stefan Stefanov

بیست و پنجمین کنفرانس مکانیک

International Conferences | 2017-05-02

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Mass flow rate prediction of temperature-driven gas flows through divergence micro/nanochannels

Ehsan Roohi - Mohammad Sajjad Mozaffari

بیست و پنجمین کنفرانس مکانیک

International Conferences | 2017-05-02

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LES investigation of cavitating characteristics around a 3D sphere

Mohammad Reza Pendar - Ehsan Roohi

هجدهمین همایش صنایع دریایی کشور

International Conferences | 2016-10-18

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On the Radiometric Flow in a Ratchet-Channel Nano-Pump

Vahid Shahabi - Ehsan Roohi - Tobias Baier - Steffen Hardt

30th International Symposium on Rarefied Gas Dynamics

International Conferences | 2016-07-10

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On the Accuracy of the SBT Collision Algorithm in Nanoflows and Hypersonic Regime

Ehsan Roohi - Stefan Stefanov

30th International Symposium on Rarefied Gas Dynamics

International Conferences | 2016-07-10

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On the unsteady vortex shedding behind a cylinder

Ehsan Roohi - Moein Madani

1st International MIGRATE SummerSchool & Workshop

International Conferences | 2016-06-28

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Evaluation of the SBT collision model for near-continuum nano fourier flows

Ehsan Roohi

First MIGRATE Summer School & Workshop, June 27 to July 1 2016, Strasbourg, France

International Conferences | 2016-06-27

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Convergence behaviour of the SBT collision algorithm in nano Fourier flow

Ehsan Roohi - Elmira Taheri

6th International Conference on Nanostructures

International Conferences | 2016-03-07

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Numerical investigation of Knudsen pump performance

Ehsan Roohi - Vahid Shahabi

پانزدهمین کنفرانس انجمن هوافضای ایران

International Conferences | 2016-03-01

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Investigation of the SBT/SBT-TAS Performance in Unsteady Flows

Ehsan Roohi - Moein Madani - Bijan Goshayeshi

2nd European Conference on Non-equilibrium Gas Flows

International Conferences | 2015-12-09

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Investigation of Cold to Hot Heat Transfer in a Nano Step Geometry

Ehsan Roohi - َAmirmehran Mahdavishahri

2nd European Conference on Non-equilibrium Gas Flows

International Conferences | 2015-12-09

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A Review of Kac-Based Collision Models: Bernoulli Trials and its Simplified and Intelligent Variants

Bijan Goshayeshi - Ehsan Roohi - Stefan Stefanov

2nd European Conference on Non-equilibrium Gas Flows

International Conferences | 2015-12-09

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Detailed investigation of cavitation and supercavitation around different geometries using various turbulence and mass transfer models

Mohammad Reza Pendar - Ehsan Roohi

9th International Symposium on Cavitation CAV 2015

International Conferences | 2015-12-06

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FLOW AND THERMAL FIELDS INVESTIGATION IN DIVERGENT MICRO/NANO CHANNELS

Amin Ebrahimi - Ehsan Roohi

4th International Conference on Advances in Mechanical Engineering-ICAME 2015

International Conferences | 2015-05-13

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INVESTIGATION OF CAVITATION AROUND DISK AND CONICAL CAVITATORS USING DIFFERENT SETS OF TURBULENCE AND CAVITATION MODELS

Mohammad Reza Pendar - Ehsan Roohi

4th International Conference on Advances in Mechanical Engineering-ICAME 2015

International Conferences | 2015-05-13

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Study of cavitation and supercavitation around a 3D cylinder using Different Turbulence and Mass Transfer Models

Mohammad Reza Pendar - Ehsan Roohi

بیست و سومین همایش سالانه بین المللی مهندسی مکانیک ایران

International Conferences | 2015-05-12

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Second Law Analysis of Nano Thermal Cavity Flow Using DSMC

Ehsan Roohi - Ehsan Yazdanpanah Moghadam

Asian Nanoforum conference

International Conferences | 2015-03-08

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Investigation of Nano Nozzle Flows using Direct Simulation Monte Carlo

Seyed Ali Saadati - Ehsan Roohi

Asian Nanoforum conference

International Conferences | 2015-03-08

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Simulation of Droplet Formation in a T-Junction Micro Channel Using Volume of Fluid Technique

Ehsan Roohi - Shima Malekzadeh

ENTECH '14

International Conferences | 2014-12-22

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DSMC SIMULATION OVER REACTIVE FLOW OF A RE-ENTRY VEHICLE USING SBT-TAS

Ehsan Roohi - Bijan Goshayeshi

اولین کنفرانس بین المللی و سومین کنفرانس ملی انجمن پیشرانش هوافضایی ایران-

International Conferences | 2014-10-22

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Improving the Computational Efficiency of the DSMC Simulation of Micro/Nano Nozzles Flows Using Simplified Bernoulli-Trials Algorithm

Seyed Ali Saadati - Ehsan Roohi

اولین کنفرانس بین المللی و سومین کنفرانس ملی انجمن پیشرانش هوافضایی ایران-

International Conferences | 2014-10-22

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THE EFFECT OF VORTICES BEHAVIOR ON HEAT TRANSFER IN RAREFIED GAS OF THERMAL CAVITY

Ehsan Yazdanpanah Moghadam - Ehsan Roohi - Javad Abolfazli Esfahani

اولین کنفرانس بین المللی و سومین کنفرانس ملی انجمن پیشرانش هوافضایی ایران-

International Conferences | 2014-10-22

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DSMC Simulation of Micro/Nano Flows using SBT-TAS Technique

Ali Amiri Jaghargh - Ehsan Roohi - Stefan Stefanov - Hassan Nami

29th International Symposium on Rarefied Gas Dynamics

International Conferences | 2014-07-13

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Effects of Shear Work on the Non-Equilibrium Heat Transfer Characteristics of Rarefied Micro/Nano Flows

Mojtaba Balaj - Ehsan Roohi -

29th International Symposium on Rarefied Gas Dynamics

International Conferences | 2014-07-13

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THE SECOND ORDER TEMPERATURE JUMP BOUNDARY CONDITION IN HYPERSONIC AND MICROSCALE RAREFIED GAS FLOW SIMULATIONS

Nam Le - Ehsan Roohi

29th International Symposium on Rarefied Gas Dynamics

International Conferences | 2014-07-13

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Extension of the SBT-TAS Algorithm to Curved Boundary Geometries

Bijan Goshayeshi - Ehsan Roohi - Javad Abolfazli Esfahani - Stefan Stefanov

29th International Symposium on Rarefied Gas Dynamics

International Conferences | 2014-07-13

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Three dimensional parametric study of a centrifugal pump impeller by varying the blade number

Behrouz Jam - Ehsan Roohi - Javad Abolfazli Esfahani

The 22st Annual International Conference on Mechanical Engineering-ISME2014

International Conferences | 2014-04-22

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Influence of molecular structure on thermal behavior in vacuum packaged MEMS/NEMS using DSMC

Ehsan Roohi - Ehsan Yazdanpanah Moghadam - Javad Abolfazli Esfahani

5thInternational Conference on Nanostructures (ICNS5)

International Conferences | 2014-03-06

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Simulation of 3-D Cavitation behind a Disk Cavitator using Different Turbulence/Mass Transfer Models

Amin Rahimi - Mohammad Reza Pendar - Ehsan Roohi

سیزدهمین کنفرانس انجمن هوافضای ایران

International Conferences | 2014-03-04

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STALL SIMULATION OF FLOW AROUND AN AIRFOIL USING LES MODEL AND COMPARISON OF RANS MODELS AT LOW ANGLES OF ATTACK

Ehsan Roohi - FARSHAD REZAEI - Mahmoud Pasandidehfard

15th Conference On Fluid Dynamics, fd2013

International Conferences | 2013-12-18

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STALL SIMULATION OF FLOW AROUND AN AIRFOIL USING LES MODEL AND COMPARISON OF RANS MODELS AT LOW ANGLES OF ATTACK

FARSHAD REZAEI - Ehsan Roohi - Mahmoud Pasandidehfard

15th Conference On Fluid Dynamics, fd2013

International Conferences | 2013-12-17

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INVESTIGATION OF RAREFIED GAS FLOW AROUND NACA 0012 AIRFOIL USING DSMC AND NS SOLVERS

Ahmad Shojasani - Ehsan Roohi - Mohsen Kahrom

Ankara International Aerospace Conference

International Conferences | 2013-09-11

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LARGE EDDY SIMULATION OF COMPRESSIBILE FLOW AROUND NACA 0012 AIRFOIL AT STALL CONDITION

FARSHAD REZAEI - Ehsan Roohi - Mahmoud Pasandidehfard

Ankara International Aerospace Conference

International Conferences | 2013-09-11

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Numerical Simulation of 3-D Cavitation behind a Disk Cavitator Using OpenFOAM

Amin Rahimi - Ehsan Roohi - Mohammad Javad Maghrebi

دوازدهمین کنفرانس انجمن هوافضای ایران

International Conferences | 2013-02-19

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DSMC Modeling of Rarefied Flow through Micro/Nano Backward-Facing Steps

Amirmehran Mahdavi - Ehsan Roohi

دوازدهمین کنفرانس انجمن هوافضای ایران

International Conferences | 2013-02-19

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شبیه سازی عددی اندرکنش دو جت جریان آشفته صفحه ای

Ehsan Roohi - Amin Ebrahimi - پرویز هاشمی - احسان فغانی

دوازدهمین کنفرانس انجمن هوافضای ایران

International Conferences | 2013-02-19

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Numerical Simulation of Cavitation around a Three-Dimensional Hydrofoil Using VOF Method and LES Turbulence Model

Amirpooyan Zahiri - Ehsan Roohi - Mahmoud Pasandidehfard

اولین کنفرانس ملی آیرودینامیک و هیدرودینامیک

International Conferences | 2012-10-16

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Investigating the effects of numerical discretisation on the accuracy of incompressible turbulent flow solution around NACA 0012 airfoil

FARSHAD REZAEI - Ehsan Roohi - Mahmoud Pasandidehfard

اولین کنفرانس ملی آیرودینامیک و هیدرودینامیک

International Conferences | 2012-10-16

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Evaluation of different turbulence models for simulation of shock train in a convergent-divergent nozzle

Seyed Mahmood Mousavi - Ehsan Roohi

The First National Aerodynamics and Hydrodynamics Conference

International Conferences | 2012-10-16

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Numerical Simulation of Cavitation around a Two-Dimensional Hydrofoil Using VOF Method and LES Turbulence Model

Ehsan Roohi - Amirpooyan Zahiri - Mahmoud Pasandidehfard

CAV2012

International Conferences | 2012-08-13

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DSMC Simulation of rarefied gas flows under Cooling Conditions Using a New Iterative Wall Heat Flux Specifying Technique

- Ehsan Roohi - R. S. Myong

28th Symposium on Rarefied Gas Dynamics

International Conferences | 2012-07-09

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Compressibility and rarefaction effects on entropy and entropy generation in micro/nano Couette flow using DSMC

Omid Ejtehadi - Javad Abolfazli Esfahani - Ehsan Roohi

1st European Conference on Gas Micro Flows

International Conferences | 2012-06-06

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Thermal-Pressure-Driven Gas Flows through Micro Channels

H. Akhlaghi - Ehsan Roohi

1st European Conference on Gas Micro Flows

International Conferences | 2012-06-06

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Numerical Simulation of Cavitation around a Two-Dimensional Hydrofoil Using LES

Amirpooyan Zahiri - Ehsan Roohi - Mahmoud Pasandidehfard

20th Annual International Conference on Mechanical Engineering-ISME2012

International Conferences | 2012-05-15

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DSMC Simulation of Shear Driven Flow in Nano Gap Structures

Omid Ejtehadi - Ehsan Roohi - Javad Abolfazli Esfahani

4th International Conference on Nanostructures

International Conferences | 2012-03-12

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Parallel DSMC simulation of Nano Cavity Structures

Alireza Mohammadzadeh - Ehsan Roohi - Hamid Niazmand

4th International Conference on Nanostructures

International Conferences | 2012-03-12

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DETAILED INVESTIGATION OF THERMAL AND HYDRODYNAMIC FLOW BEHAVIOUR IN MICRO/NANO CAVITY USING DSMC AND NSF EQUATIONS

Alireza Mohammadzadeh - Ehsan Roohi - Hamid Niazmand

9th International Conference on Nanochannels, Microchannels and Minichannels

International Conferences | 2011-06-19

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DSMC SOLUTION FOR THE ADIABATIC AND ISOTHERMAL MICRO/NANO LID-DRIVEN CAVITY

Alireza Mohammadzadeh - Ehsan Roohi - Hamid Niazmand - Stefan Stefanov

3rd GASMEMS Workshop - Bertinoro

International Conferences | 2011-06-06

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Detailed Investigation of Rarefied Flow in Micro/Nano Lid-driven Cavities Using DSMC

Alireza Mohammadzadeh - Ehsan Roohi - Hamid Niazmand

19th Annual Conference on Mechanical Engineering-ISME2011

International Conferences | 2011-05-10

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Simulation of Rarefied Gas Flow in Micro/Nano Cavity Using DSMC

Alireza Mohammadzadeh - Ehsan Roohi - Hamid Niazmand

10th Iranian Aerospace Society Conference

International Conferences | 2011-03-01

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DSMC Simulation of Micro/Nano Shear Driven Flows

Omid Ejtehadi - Ehsan Roohi - Javad Abolfazli Esfahani

10th Iranian Aerospace Society Conference

International Conferences | 2011-03-01

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Hybrid DSMC/Navier-Stokes Solution of Rarefied Micro-Nano Flows

Ehsan Roohi - M. Darbandi

2nd GASMEMS Workshop

International Conferences | 2010-07-09

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Trials of an Open Source DSMC code

Tom Scanlon - Ehsan Roohi - Graham Macpherson - Jason Reese

DSMC SantaFe

International Conferences | 2009-09-05

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Mass Flow Rate Scaling of the Continuum-Based Equations Using Information Preservation Method

Ehsan Roohi - Masoud Darbandi - Shidvash Vakilipour - Gerry E. Schneider

41st AIAA Thermophysics Conference

International Conferences | 2009-06-22

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Study of Gas Flows in Micro-Nano Scale Geometries Using an Unstructured DSMC Solver

Ehsan Roohi - Masoud Darbandi - Vahid Mirjalili

Seventh International ASME Conference on Nanochannels, Microchannels and Minichannels ICNMM2009

International Conferences | 2009-06-22

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Physical Aspects of Rarefied Gas Flow in Micro to Nano Scale Geometries Using DSMC

Ehsan Roohi - Masoud Darbandi - Shidvash Vakilipour - Gerry E. Schneider

41st AIAA Thermophysics Conference

International Conferences | 2009-06-22

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EXTENSION OF THE NAVIER-STOKES EQUATIONS TO TRANSITION REGIME USING INFORMATION PRESERVATION METHOD

Ehsan Roohi - Shidvash Vakilipour - Masoud Darbandi - Vahid Mirjalili

Workshop on Moment Methods in Kinetic Gas Theory

International Conferences | 2008-11-06

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DSMC Solution of Supersonic to Choked Subsonic Flow in Micro to Nano Channels

Ehsan Roohi - Vahid Mirjalili - Masoud Darbandi

Sixth International ASME Conference on Nanochannels, Microchannels and Minichannels ICNMM2008

International Conferences | 2008-06-23

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Modeling Cavitation over Axisymmetric Bodies: VOF Technique versus Boundary Element Method

Hossein Moin - Iman Rashidi Toroghi - Mohammad Passandideh-Fard - Mahmoud Pasandidehfard - Ehsan Roohi

The 16th Annual Conference of the CFD Society of Canada

International Conferences | 2008-06-09

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A Computational Model for Cavitation Using Volume-of-Fluid Method

Mohammad Passandideh-Fard - Ehsan Roohi

14th Annual Conference of the CFD Society of Canada

International Conferences | 2006-08-06

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Coalescence Collision of Two Droplets: Bubble Entrapment and the Effects of Important Parameters

Mohammad Passandideh-Fard - Ehsan Roohi

14th Annual (International) Mechanical Engineering Conference

International Conferences | 2006-05-01

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بررسی اثر سطح متحرک بر ایرفویل ناکا 0012 در نسبت سرعت زیاد

احسان روحی گل خطمی - حسن ابوالقاسمی گل افشانی - محمدجواد امیری

علوم کاربردی و محاسباتی در مکانیک

Internal journal | فروردین ۱۴۰۲

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بررسی عددی اثر مولدگردابه دوپره پاد چرخشی در حالت غیر فعال بر روی ایرفویل NACA 2412

حسن ابوالقاسمی گل افشانی - احسان روحی گل خطمی

مکانیک سازه ها و شاره ها-Journal of Solid and Fluid Mechanics

Internal journal | بهمن ۱۴۰۰ Volume (11) No (6) Pages (235-252)

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مطالعه ی آزمایشگاهی عملکرد رادیومتر کروکس

رضا عرب پور - احسان روحی گل خطمی

علوم کاربردی و محاسباتی در مکانیک

Internal journal | دی ۱۴۰۰

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ارائه یک الگوریتم جدید ترکیبی DSMC-Focker Planck برای مدلسازی جریان گاز رقیق در نازل همگرا-واگرا همراه با پلوم

امیرمهران مهدوی شهری - احسان روحی گل خطمی

مکانیک سازه ها و شاره ها-Journal of Solid and Fluid Mechanics

Internal journal | اسفند ۱۳۹۹ Volume (10) No (4) Pages (331-343)

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پیش بینی زمان پیک و پایان شیوع بیماری کرونا

امیرپویان ظهیری - احسان روحی گل خطمی

اطلاعات سیاسی_اقتصادی

Internal journal | اسفند ۱۳۹۸ Volume (27525) No (27525) Pages (3-3)

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مکانیک سیالات در ابعاد میکرو و نانو

احسان روحی گل خطمی - عدنان محمدی

اطلاعات سیاسی_اقتصادی

Internal journal | مرداد ۱۳۹۸ Volume (27340) No (27340) Pages (19-19)

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تحلیل جریان رقیق شده برشی در هندسه‌های میکرو/نانو با روش فوکرپلانک

احسان روحی گل خطمی - وحید رضاپورجاغرق - امیرمهران مهدوی شهری

مهندسی مکانیک مدرس

Internal journal | تیر ۱۳۹۸ Volume (19) No (7) Pages (1721-1732)

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درد مهاجرت مهندسین

احسان روحی گل خطمی

اطلاعات سیاسی_اقتصادی

Internal journal | اسفند ۱۳۹۷ Volume (27241) No (27241) Pages (11-11)

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اعمال مدل زیرشبکه ای غیر همسانگرد با کمترین اتلافات در نرم‌افزار اپن‌فوم و ارزیابی آن در تحلیل جریان اغتشاشی در کانال

امیر پویان ظهیری - احسان روحی گل خطمی

مهندسی مکانیک مدرس

Internal journal | اسفند ۱۳۹۶ Volume (17) No (12) Pages (478-484)

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ارزیابی مدل گرادیانی تنظیم شده در محاسبة تانسور تنش مقیاس های زیرشبکه ای با تصحیح حلگر پیمپل فوم در نرم افزار اپن فوم

الیاس لارکرمانی - احسان روحی گل خطمی

مهندسی مکانیک مدرس

Internal journal | مهر ۱۳۹۶ Volume (17) No (7) Pages (283-294)

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ارزیابی الگوریتم برخوردی نمونه گیری های برنولی ساده شده در تحلیل جریان رقیق شده نانو-فوریه

المیرا طاهری - احسان روحی گل خطمی

مهندسی مکانیک مدرس

Internal journal | بهمن ۱۳۹۵ Volume (16) No (11) Pages (113-122)

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حل عددی پدیده کاویتاسیون بر روی هندسه‌های متقارن محوری با استفاده از روش نسبت حجمی سیال (VOF)

احسان روحی گل خطمی - محمد پسندیده فرد

شریف

Internal journal | خرداد ۱۳۹۳ Volume (30) No (3) Pages (79-90)

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توسعه یک فرمول‌بندی با عملکرد برتر جهت تسخیر شوک ایستاده در جریان با گستره کامل رژیم سرعت

مسعود دربندی - وهاب مکاری زاده - احسان روحی گل خطمی

مواد پیشرفته در مهندسی

Internal journal | فروردین ۱۳۸۵ Volume (25) No (2) Pages (167-181)

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برر سی عددی تراوایی سطوح متخلخل در بستر گاز شیل با روش DSMC

احسان روحی گل خطمی - حسین چمبری

هجدهمین کنفرانس دینامیک شاره ها

Internal conferences | ۱۳۹۸/۰۶/۰۵

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بررسی عددی و پارامتری مولد گردابه زیرلایه مرزی برروی ایرفویل ناکا 2412

احسان روحی گل خطمی - حسن ابوالقاسمی گل افشانی

هجدهمین کنفرانس دینامیک شاره ها

Internal conferences | ۱۳۹۸/۰۶/۰۵

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تحلیل عددی جریان تنش حرارتی غیرخطی در مجرای بین دو استوانه بیضوی هممرکز

احسان روحی گل خطمی - سپهر رفیعی نسب - علیرضا تیمورتاش

هجدهمین کنفرانس دینامیک شاره ها

Internal conferences | ۱۳۹۸/۰۶/۰۵

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طراحی، ساخت و ارزیابی مبدل انرژی امواج دریا به برق از نوع نزدیک ساحلی و فراساحلی با چرخش ژنراتور یک جهته و دو جهته، نوسانی چرخدندهای با قابلیت تنظیم در حالت های مختلف امواج

احسان روحی گل خطمی - علی سنگتراش

بیستمین همایش ملی صنایع دریایی

Internal conferences | ۱۳۹۷/۰۹/۲۶

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جداسازی مخلوط گازها با استفاده از پمپ های رادیومتریک

علی لطفیان - احسان روحی گل خطمی - حامد سروش

بیست و ششمین همایش سالانه بین المللی انجمن مهندسان مکانیک ایران

Internal conferences | ۱۳۹۷/۰۲/۰۴

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شبیه سازی جریان گاز رقیق داخل محیط متخلخل به روش DSMC

وحید شریعتی سرچشمه - احسان روحی گل خطمی

بیست و ششمین همایش سالانه بین المللی انجمن مهندسان مکانیک ایران

Internal conferences | ۱۳۹۷/۰۲/۰۴

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بررسی جریان کاویتاسیون حول یک هیدروفویل با استفاده از مدلهای آشفتگی مختلف

ابوالفضل موحدیان - محمود پسندیده فرد - احسان روحی گل خطمی

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Internal conferences | ۱۳۹۷/۰۲/۰۴

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شبیه سازی تخلخل در میکرو/نانو کانالها بوسیله تابع توزیع احتمال و تحلیل جریان با روش DSMC

احسان روحی گل خطمی - محمدحسن احمدیان - علیرضا تیمورتاش

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Internal conferences | ۱۳۹۷/۰۲/۰۴

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ارزیابی تانسور تنش مقیاسهای زیرشبکهای با مدل گرادیانی بهبود یافته در جریان کانال آشفته

احسان روحی گل خطمی - الیاس لارکرمانی

بیست و پنجمین کنفرانس مکانیک

Internal conferences | ۱۳۹۶/۰۲/۱۲

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ارزیابی مدل گرادیانی بهبود یافته در محاسبة تانسور تنش مقیاس های زیرشبکه ای در جریان کانال آشفته

الیاس لارکرمانی - احسان روحی گل خطمی

شانزدهمین کنفرانس بین المللی انجمن هوافضای ایران

Internal conferences | ۱۳۹۵/۱۲/۰۳

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شبیه سازی عددی جت و محرک گردابه به منظور کنترل فعال جدایش جریان

احسان روحی گل خطمی - حسین هنرور پرسنائی - محسن کهرم

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Internal conferences | ۱۳۹۵/۰۲/۰۷

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Numerical Study of Mass Flux between Periodically Structured Surfaces

احسان روحی گل خطمی - وحید شهابی - Steffen Hardt

2nd European Conference on Non-equilibrium Gas Flows

Internal conferences | ۱۳۹۴/۰۹/۱۸

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شبیه سازی تشکیل قطره در میکرو کانال تی شکل با استفاده از روش حجم سیال

شیما ملک زاده - احسان روحی گل خطمی

بیست و سومین همایش سالانه بین المللی مهندسی مکانیک ایران

Internal conferences | ۱۳۹۴/۰۲/۲۲

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مدلسازی برخورد قطره به فیلم سیال با کاربرد در پدیده یخ زدگی بدنه هواپیما

شیما ملک زاده - احسان روحی گل خطمی

اولین کنفرانس بین المللی و سومین کنفرانس ملی انجمن پیشرانش هوافضایی ایران-

Internal conferences | ۱۳۹۳/۰۷/۳۰

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اعتبارسنجی مدل آشفتگی LES و روش نسبت حجمی سیال در تحلیل کاویتاسیون روی هیدروفویل Clark-Y

امیرپویان ظهیری - احسان روحی گل خطمی - محمود پسندیده فرد

یازدهمین کنفرانس انجمن هوافضای ایران

Internal conferences | ۱۳۹۰/۱۲/۰۲

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ارایه یک الگوریتم عددی ترکیبی مولکولی-پیوسته برای شبیه‌سازی جریان گاز در سامانه‌های نانو پیشران

احسان روحی گل خطمی - مسعود دربندی

کنفرانس دانشجویی نانو

Internal conferences | ۱۳۸۹/۱۲/۱۲

Dr. Ehsan Roohi

Professor

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Symmetrized generalized and simplified bernoulli-trials collision schemes in DSMC

Large Eddy Simulation of Cavitating Flow around a Pitching Hydrofoil

Large Eddy Simulations of Cavitation around a Pitching-Plunging Hydrofoil

Inversion in Binary Gas Mixtures in Rarefied Flow Conditions: Direct Simulation Monte Carlo Solution and Comparison with the Analytical Solutions at Free Molecular Regime

On the effects of hybrid surface wettability on the structure of cavitating flow using implicit large eddy simulation

A comprehensive review on micro- and nano-scale gas flow effects: Slip-jump phenomena, Knudsen paradox, thermally-driven flows, and Knudsen pumps

Numerical Study of Gas Flow in Super Nanoporous Materials Using the Direct Simulation Monte-Carlo Method

Identification of frequency modes and spectral content for noise suppression: Cavitation flow over 3-D hydrofoil with sinusoidal leading edge

On the rarefied thermally-driven flows in cavities and bends

A novel transient-adaptive subcell algorithm with a hybrid application of different collision techniques in direct simulation Monte Carlo (DSMC)

A study on micro-step flow using a hybrid direct simulation Monte Carlo–Fokker–Planck approach

On the nonlinear thermal stress, thermal creep, and thermal edge flows in triangular cavities

A symmetrized and simplified Bernoulli trial collision scheme in direct simulation Monte Carlo

Flow and thermal field investigation of rarefied gas in a trapezoidal micro/nano-cavity using DSMC

Generalized description of the Knudsen layer thickness in rarefied gas flows

Assessment of anisotropic minimum-dissipation (AMD) subgrid-scale model: Gently-curved backward-facing step flow

Homogeneous Relaxation and Shock Wave Problems: Assessment of the Simplified and Generalized Bernoulli Trial Collision Schemes

Binary gas mixtures separation using microscale radiometric pumps

Evaluation of the generalized bernoulli trial-transient adaptive subcell (GBT-TAS) collision scheme in treating rarefied gas flows

Prediction of peak and termination of novel coronavirus COVID-19 epidemic in Iran

Numerical investigation of wave interactions in an experimental wave-energy converter using OpenFOAM

A novel hybrid DSMC-Fokker Planck algorithm implemented to rarefied gas flows

LES study of unsteady cavitation characteristics of a 3-D hydrofoil with wavy leading edge

Numerical analysis of nonlinear thermal stress flow between concentric elliptical cylinders

Thermal and hydraulic performance analysis of a heat sink with corrugated channels and nanofluids

Shear-driven micro/nano flows simulation using Fokker Planck approach: Investigating accuracy and efficiency

Direct Simulation Monte Carlo investigation of fluid characteristics and gas transport in porous microchannels

LES investigation of sheet-cloud cavitation around a 3-D twisted wing with a NACA 16012 hydrofoil

Comprehensive assessment of newly-developed slip-jump boundary conditions in high-speed rarefied gas flow simulations

A dusty gas model-direct simulation Monte Carlo algorithm to simulate flow in micro-porous media

Wavelet analysis and frequency spectrum of cloud cavitation around a sphere

Radiometric flow in periodically patterned channels: fluid physics and improved configurations

Anisotropic Minimum-Dissipation (AMD) Subgrid-Scale Model Implemented in OpenFOAM: Verification and Assessment in Single-phase and Multi-phase Flows

Rarefied transitional flow through diverging nano- and microchannels: A TRT lattice Boltzmann study

Ballistic and Collisional Flow Contributions to Anti-Fourier Heat Transfer in Rarefied Cavity Flow

Evaluating the Modulated Gradient Model in Large-Eddy Simulation of Channel Flow with OpenFOAM

On the vortical characteristics and cold-to-hot transfer of rarefied flow in a lid-driven isosceles orthogonal triangular cavity with isothermal walls

Cavitation characteristics around a sphere: An LES investigation

A generalized form of the Bernoulli Trial collision scheme in DSMC: Derivation and evaluation

On the consequences of successively repeated collisions in no-time-counter collision scheme in DSMC

On the thermally-driven gas flow through divergent micro/nanochannels

Evaluation of New Collision-Pair Selection Models in DSMC

Regulation of anti-Fourier heat transfer for non-equilibrium gas flows through micro/nanochannels

Evaluation of the SBT-TAS collision scheme on treating unsteady flows

On the convergence of the simplified Bernoulli trial collision scheme in rarefied Fourier flow

Knudsen pump inspired by Crookes radiometer with a specular wall

DSMC Investigation of Rarefied Gas Flow through Diverging Micro/Nano-channels

Thermally induced gas flows in ratchet channels with diffuse and specular boundaries

Collision partner selection schemes in DSMC: From micro/nano flows to hypersonic flows

Heat transfer and entropy generation in a microchannel with longitudinal vortex generators using nanofluids

Nanofluid flow and heat transfer in a microchannel with longitudinal vortex generators: Two-phase numerical simulation

Flow and thermal fields investigation in divergent micro/nano channels

Investigation of cavitation around 3D hemispherical head-form body and conical cavitators using different turbulence and cavitation models

Simulation of ThreeDimensional Cavitation behind a Disk using Various Turbulence and Mass Transfer Models

Numerical study of flow patterns and heat transfer in mini twisted oval tubes

A Novel Algorithm for Implementing Specified Wall Hat Flux in DSMC: Application to Micro/Nano Flows and Hypersonic Flows

A new form of the second order temperature jump boundary condition for the low-speed nanoscale and hypersonic rarefied gas flow simulations

DSMC simulation of hypersonic flows using an improved SBT-TAS technique

A novel simplified Bernoulli trials collision scheme in the direct simulation Monte Carlo with intelligence over particle distances

Detailed Investigation of Flow and Thermal Field in Micro/Nano Nozzle using Simplified Bernoulli Trial (SBT) collision Scheme in DSMC

Investigation of cold-to-hot transfer and thermal separation zone through nano step geometries

Investigation of Different Droplet Formation Regimes in a T-junction Microchannel Using the VOF Technique in OpenFOAM

Aircraft Propulsion

Rarefied gas flow simulations of NACA 0012 airfoil and sharp 25–55-deg biconic subject to high order nonequilibrium boundary conditions in CFD

Low Mach number slip flow through diverging microchannel

Effects of shear work on non-equilibrium heat transfer characteristics of rarefied gas flows through micro/nanochannels

Numerical investigation of thermoacoustic refrigerator at weak and large amplitudes considering cooling effect

Rarefied gas flow behavior in micro/nanochannels under specified wall heat flux

Numerical study of liquid flow and heat transfer in rectangular microchannel with longitudinal vortex generators

Three dimensional investigation of the shock train structure in a convergent–divergent nozzle

DSMC simulation of micro/nano flows using SBT–TAS technique

Wall heat transfer effects on the hydro/thermal behaviour of Poiseuille flow in micro/nanochannels

Investigation of aerodynamic characteristics of rarefied flow around NACA 0012 airfoil using DSMC and NS solvers

Heat transfer and fluid characteristics of rarefied flow in thermal cavities

Extension of a second order velocity slip/temperature jump boundary condition to simulate high speed micro/nanoflows

Thermal rarefied gas flow investigations through micro/nano backward-facing step: Comparison of DSMC and CFD subject to hybrid slip and jump boundary conditions

Large Eddy Simulation of Shock Train in a Convergent- Divergent Nozzle