NDLI: Comparative study between computational and experimental results for binary rarefied gas flows through long microchannels

Content Provider	Springer Nature Link
Author	Szalmas, Lajos Pitakarnp, Jeerasak Geoffroy, Sandrine Colin, Stephane Valougeorgis, Dimitris
Copyright Year	2010
Abstract	A comparative study between computational and experimental results for pressure-driven binary gas flows through long microchannels is performed. The theoretical formulation is based on the McCormack kinetic model and the computational results are valid in the whole range of the Knudsen number. Diffusion effects are taken into consideration. The experimental work is based on the Constant Volume Method, and the results are in the slip and transition regime. Using both approaches, the molar flow rates of the He–Ar gas mixture flowing through a rectangular microchannel are estimated for a wide range of pressure drops between the upstream and downstream reservoirs and several mixture concentrations varying from pure He to pure Ar. In all cases, a very good agreement is found, within the margins of the introduced modeling and measurement uncertainties. In addition, computational results for the pressure and concentration distributions along the channel are provided. As far as the authors are aware of, this is the first detailed and complete comparative study between theory and experiment for gaseous flows through long microchannels in the case of binary mixtures.
Starting Page	1103
Ending Page	1114
Page Count	12
File Format	PDF
ISSN	16134982
Journal	Microfluidics and Nanofluidics
Volume Number	9
Issue Number	6
e-ISSN	16134990
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-05-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Binary rarefied gas flows McCormack model Discrete velocity method Flow rate measurement Biomedical Engineering Industrial Chemistry/Chemical Engineering Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Chemistry Condensed Matter Physics Electronic, Optical and Magnetic Materials

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