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A Parallel DSMC Investigation of Monatomic/Diatomic Gas Flows in a Micro/Nano Cavity.
- Source :
-
Numerical Heat Transfer: Part A -- Applications . Aug2013, Vol. 63 Issue 4, p305-325. 21p. - Publication Year :
- 2013
-
Abstract
- In the current study, we performed a DSMC investigation to study the nonequilibrium effects on monatomic and diatomic rarefied flows in micro/nano lid-driven cavity. Our DSMC solver is parallel and benefits from a variable time step algorithm. The results of our simulation showed that growing rarefaction effects increase the maximum temperature of the cavity flow. As the inter-molecular rate of collision diminishes in the nonequilibrium regime, molecules manage to conserve their obtained energy from diffused surfaces; consequently, the flow temperature increases. We also investigate the nonequilibrium effects on the shear stress profile in the micro/nano cavity. Although increasing the Knudsen number decreases flow shear stress, the nondimensional shear stress, which shows the molecular potential for performing collision in the rarefied flow, increases. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10407782
- Volume :
- 63
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Numerical Heat Transfer: Part A -- Applications
- Publication Type :
- Academic Journal
- Accession number :
- 83467936
- Full Text :
- https://doi.org/10.1080/10407782.2013.730463