Variation of molecular mean free path in confined geometries
Conference item
Xie, Jianfei 2019. Variation of molecular mean free path in confined geometries. AIP Publishing. https://doi.org/10.1063/1.5119594.
| Authors | Xie, Jianfei |
|---|---|
| Abstract | This paper aims to settle disputes in the literature about the spatial variation of the molecular mean free path (MFP) in confined geometries. The MFP of a gas is determined by using both molecular dynamics (MD) and the direct simulation Monte Carlo (DSMC) technique. In spatially-homogeneous cases, the numerical results exactly recover the kinetic theory predictions of a constant MFP. However, in microchannels, the MFP is found to vary near to the bounding walls and reduce at the surfaces to half of its bulk value as long as collisions between gas molecules and wall atoms are taken into account in the calculation of the MFP. |
| Keywords | Rarefied Gas Dynamics; spatial variation; confined geometries |
| Year | 2019 |
| Journal | AIP Conference Proceedings |
| Publisher | AIP Publishing |
| Digital Object Identifier (DOI) | https://doi.org/10.1063/1.5119594. |
| Web address (URL) | http://hdl.handle.net/10545/624171 |
| hdl:10545/624171 | |
| ISBN | 9780735418745 |
| File | File Access Level Open |
| Publication dates | 05 Aug 2019 |
| Publication process dates | |
| Deposited | 03 Oct 2019, 14:18 |
| Accepted | Mar 2019 |
| Contributors | University of Edinburgh |
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