Journal
MICROFLUIDICS AND NANOFLUIDICS
Volume 3, Issue 6, Pages 689-695Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10404-007-0158-3
Keywords
Microscale flows; Mass transfer; Micro fluidics; Pressure measurements; Wall interactions
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Experimental investigations of isothermal steady flows for various gases have been carried out in a silica micro tube. This study is focused on the mass flow rate measurements of these flows in slip regime using a suitable powerful platform. First we analyse, for each gas, the pertinence of a first or second order continuum treatment; then we deduce from experiments, using the appropriate treatment, the tangential momentum accommodation coefficient (TMAC) of each gas. The TMAC obtained for the various pairs of gas (nitrogen, argon, helium)/surface (fused silica) exclude a full diffuse reflection.
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