Authors
Xie, Jianfei
Affiliation
University of EdinburghIssue Date
2019-08-05
Metadata
Show full item recordAbstract
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.Citation
Xie, J., Gibelli, L., Borg., M. K., Henrich, O., Lockerby,. D. A., and Reese, J., M. (2019) ‘Variation of molecular mean free path in confined geometries’. 31st International Symposium on Rarefied Gas Dynamics: RGD31. Glasgow, United Kingdom, 23-27 July, pp. 1-8. DOI: 10.1063/1.5119594.Publisher
AIP PublishingJournal
AIP Conference ProceedingsDOI
10.1063/1.5119594.Additional Links
https://aip.scitation.org/doi/abs/10.1063/1.5119594Type
Meetings and ProceedingsLanguage
enISBN
9780735418745ae974a485f413a2113503eed53cd6c53
10.1063/1.5119594.