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Title: Numerical Analysis on Gas Separator with Thermal Transpiration in Micro Channels
Authors: Sugimoto, Hiroshi  kyouindb  KAKEN_id
Hibino, Masaya
Keywords: thermal transpiration
membrane gas separation
molecular gas dynamics
Knudsen pump
Knudsen diffusion
Issue Date: 27-Nov-2012
Publisher: AIP Publishing
Journal title: AIP Conference Proceedings: 28th International Symposium on Rarefied Gas Dynamics 2012
Volume: 1501
Start page: 794
End page: 801
Abstract: A gas separator that can induce a large variation of mole fraction by a small temperature difference in a single membrane is proposed. The separator makes use of two effects: The first effect is the thermal transpiration through microchannels in the membrane; the second is the accumulation of the effect of micro-channels in the counter flow of gas mixture that flows around the membrane. The numerical results show that small gas separation effects of numerous micro-channels are accumulated to induce a large variation of the mole fraction along the membrane. The numerical calculation is carried out by the direct simulation Monte Carlo (DSMC) method and a fluid model based on the mass conservation which is shown to be able to simulate the DSMC result. The performance of the device is investigated for several temperature differences between the two sides of the membrane. The relation to the membrane gas separation by Knudsen diffusion is also discussed.
Description: "28th International Symposium on Rarefied Gas Dynamics 2012"; Conference date: 9–13 July 2012; Location: Zaragoza, Spain
Rights: © 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
DOI(Published Version): 10.1063/1.4769623
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