Large variation in the boundary-condition slippage for a rarefied gas flowing between two surfaces.
Phys Rev Lett
; 107(16): 164501, 2011 Oct 14.
Article
em En
| MEDLINE
| ID: mdl-22107390
ABSTRACT
We study the slippage of a gas along mobile rigid walls in the sphere-plane confined geometry and find that it varies considerably with pressure. The classical no-slip boundary condition valid at ambient pressure changes continuously to an almost perfect slip condition in a primary vacuum. Our study emphasizes the key role played by the mean free path of the gas molecules on the interaction between a confined fluid and solid surfaces and further demonstrates that the macroscopic hydrodynamics approach can be used with confidence even in a primary vacuum environment where it is intuitively expected to fail.
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MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2011
Tipo de documento:
Article
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França