Efficient DSBGK simulations of the low speed thermal transpiration gas flows through micro-channels

2020 ◽  
Vol 119 ◽  
pp. 104924
Author(s):  
Jun Li ◽  
Chunpei Cai ◽  
Zhi-Hui Li
Keyword(s):  
Gas Flows ◽  
Low Speed ◽  
Thermal Transpiration ◽  
Micro Channels

scholarly journals Pressure-Driven Gas Flows in Micro Channels with a Slip Boundary: A Numerical Investigation

2020 ◽  
Vol 16 (2) ◽  
pp. 147-159
Author(s):  
A. Aissa ◽  
M. E. A. Slimani ◽  
F. Mebarek-Oudina ◽  
R. Fares ◽  
A. Zaim ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Gas Flows ◽  
Slip Boundary ◽  
Micro Channels ◽  
Pressure Driven

scholarly journals A comparative study of the DSBGK and DVM methods for low-speed rarefied gas flows

2019 ◽  
Vol 181 ◽  
pp. 143-159 ◽  
Author(s):  
Minh Tuan Ho ◽  
Jun Li ◽  
Lei Wu ◽  
Jason M. Reese ◽  
Yonghao Zhang
Keyword(s):  
Comparative Study ◽  
Rarefied Gas ◽  
Gas Flows ◽  
Low Speed ◽  
Rarefied Gas Flows

scholarly journals Development of an Efficient Particle Approach for Micro-Scale Gas Flow Simulations

2009 ◽  
Author(s):  
Quanhua Sun ◽  
Feng Li ◽  
Jing Fan ◽  
Chunpei Cai
Keyword(s):  
Cell Size ◽  
Gas Flow ◽  
Rarefied Gas ◽  
Direct Simulation Monte Carlo ◽  
Gas Flows ◽  
Dsmc Method ◽  
Low Speed ◽  
Micro Scale ◽  
Information Preservation ◽  
Cfd Method

The micro-scale gas flows are usually low-speed flows and exhibit rarefied gas effects. It is challenging to simulate these flows because traditional CFD method is unable to capture the rarefied gas effects and the direct simulation Monte Carlo (DSMC) method is very inefficient for low-speed flows. In this study we combine two techniques to improve the efficiency of the DSMC method. The information preservation technique is used to reduce the statistical noise and the cell-size relaxed technique is employed to increase the effective cell size. The new cell-size relaxed IP method is found capable of simulating micro-scale gas flows as shown by the 2D lid-driven cavity flows.

scholarly journals A comparative study of discrete velocity methods for low-speed rarefied gas flows

2018 ◽  
Vol 161 ◽  
pp. 33-46 ◽  
Author(s):  
Peng Wang ◽  
Minh Tuan Ho ◽  
Lei Wu ◽  
Zhaoli Guo ◽  
Yonghao Zhang
Keyword(s):  
Comparative Study ◽  
Rarefied Gas ◽  
Gas Flows ◽  
Low Speed ◽  
Discrete Velocity ◽  
Rarefied Gas Flows

scholarly journals A DSMC investigation of gas flows in micro-channels with bends

2013 ◽  
Vol 71 ◽  
pp. 261-271 ◽  
Author(s):  
Craig White ◽  
Matthew K. Borg ◽  
Thomas J. Scanlon ◽  
Jason M. Reese
Keyword(s):  
Gas Flows ◽  
Micro Channels

Pressure-driven diffusive gas flows in micro-channels: from the Knudsen to the continuum regimes

2008 ◽  
Vol 6 (5) ◽  
pp. 679-692 ◽  
Author(s):  
Nishanth Dongari ◽  
Ashutosh Sharma ◽  
Franz Durst
Keyword(s):  
Gas Flows ◽  
Micro Channels ◽  
The Continuum ◽  
Pressure Driven
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