Large variation in the boundary-condition slippage for a rarefied gas flowing between two surfaces
Fluid Dynamics
2011-10-12 v1 Mesoscale and Nanoscale Physics
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.
Cite
@article{arxiv.1109.2372,
title = {Large variation in the boundary-condition slippage for a rarefied gas flowing between two surfaces},
author = {J. Laurent and A. Drezet and H. Sellier and J. Chevrier and S. Huant},
journal= {arXiv preprint arXiv:1109.2372},
year = {2011}
}