Simulation of gas separation effect in microchannel with moving walls

Numerical simulation of a free-molecular gas flow through plane microchannel with walls performing forced curving motion according to sine law is presented. It is shown that the probability of gas molecules to pass through the channel significantly depends on relation between wave speed of walls har...

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Bibliographic Details
Published in:Microfluidics and nanofluidics 2018-06, Vol.22 (6), p.1-8, Article 60
Main Authors: Kosyanchuk, V. V., Yakunchikov, A. N.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Biomedical Engineering and Bioengineering
Computer simulation
Engineering
Engineering Fluid Dynamics
Gas flow
Gas separation
Harmonic oscillation
Mathematical models
Molecular chains
Molecular gases
Moving walls
Nanotechnology and Microengineering
Oscillations
Probability theory
Research Paper
Separation
Simulation
Wave amplitude
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Summary:Numerical simulation of a free-molecular gas flow through plane microchannel with walls performing forced curving motion according to sine law is presented. It is shown that the probability of gas molecules to pass through the channel significantly depends on relation between wave speed of walls harmonic oscillations and characteristic thermal speed of gas molecules. It is then shown how this effect can be utilized for gas separation, and the comprehensive study of the influence of the main parameters (channel width and length, wave amplitude and length, etc.) on the magnitude of effect is performed.
ISSN:1613-4982
1613-4990
DOI:10.1007/s10404-018-2079-8