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

H Akhlaghi, E Roohi, S Stefanov - Physics Reports, 2023 - Elsevier
The motivation of the current paper is to provide a detailed review of crucial topics in micro-
and nanoscale gas flows, ie, velocity slip and temperature jump phenomena and their …

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

E Taheri, E Roohi, S Stefanov - Physics of Fluids, 2022 - pubs.aip.org
Here, a symmetrized and simplified Bernoulli trials (SSBT) scheme based on the
probabilistic approach is introduced to provide less-restricted conditions in choosing …

Symmetrized generalized and simplified bernoulli-trials collision schemes in DSMC

M Javani, E Roohi, S Stefanov - Computers & Fluids, 2024 - Elsevier
The collision process is crucial in the direct simulation Monte Carlo (DSMC) method as it
considers the fundamental aspects of the Boltzmann or Kac stochastic equation. This article …

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

M Mousivand, E Roohi - Physics of Fluids, 2022 - pubs.aip.org
Here, rarefied thermally driven flow is investigated in two-dimensional equilateral triangular
cavities with different uniform wall temperatures. We used three different solvers, ie, the …

Homogeneous relaxation and shock wave problems: Assessment of the simplified and generalized Bernoulli trial collision schemes

A Shoja-Sani, E Roohi, S Stefanov - Physics of Fluids, 2021 - pubs.aip.org
The impetus of this paper is to assess the newly suggested direct simulation Monte Carlo
(DSMC) collision schemes, that is, the “Simplified Bernoulli Trails (SBT)” and “Generalized …

Heat transfer in binary polyatomic gas mixtures over the whole range of the gas rarefaction based on kinetic deterministic modeling

C Tantos, S Varoutis, C Day - Physics of Fluids, 2021 - pubs.aip.org
In the present work, the problem of heat conduction through binary mixtures of non-vibrating
polyatomic gases is studied over the whole range of the gas rarefaction in a deterministic …

On the rarefied thermally-driven flows in cavities and bends

M Mousivand, E Roohi - Fluids, 2022 - mdpi.com
This study examined rarefied thermally-driven flow in a square cavity (Case 1) and
rectangular bend (Case 2), with various uniform wall temperatures in two dimensions. We …

A Viewpoint on Thermally-Induced Transport in Rarefied Gases through the Method of Fundamental Solutions

Himanshi, AS Rana, VK Gupta - Journal of Computational and …, 2024 - Taylor & Francis
Some phenomena pertaining to rarefied gases are beyond the reach of traditional fluid
dynamics described, eg, by the Euler or Navier–Stokes–Fourier equations. Therefore we …

[HTML][HTML] Advances in micro/nano fluid flows: In Memory of Professor Jason Reese

E Roohi, Y Zhang - Physics of Fluids, 2021 - pubs.aip.org
This special issue is dedicated to Professor Jason M. Reese, who died suddenly at the early
age of 51 on 8 March 2019. Professor Reese was an internationally renowned Engineering …

Numerical investigation into the compression characteristics of a multi-stage Knudsen pump with rectangular channels

L Zhao, X Wang, Z Zhang - The European Physical Journal Plus, 2023 - epjplus.epj.org
In the rarefied gas, thermal creep flows are induced by temperature gradients along the
walls. The Knudsen pumps based on thermal creep flows have great application potential in …