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Kinetic assessment of measured mass flow rates and streamwise pressure distributions in microchannel gas flows

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Abstract

Measured mass flow rates and streamwise pressure distributions of gas flowing through microchannels were reported by many researchers. Assessment of these data is crucial before they are used in the examination of slip models and numerical schemes, and in the design of microchannel elements in various MEMS devices. On the basis of kinetic solutions of the mass flow rates and pressure distributions in microchannel gas flows, the measured data available are properly normalized and then are compared with each other. The 69 normalized data of measured pressure distributions are in excellent agreement, and 67 of them are within 1 ± 0.05. The normalized data of mass flow-rates ranging between 0.95 and 1 agree well with each other as the inlet Knudsen number Kn i <  0.02, but they scatter between 0.85 and 1.15 as Kn i >  0.02 with, to some extent, a very interesting bifurcation trend.

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Authors and Affiliations

  1. Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100080, China

    Jing Fan, Chong Xie & Jianzheng Jiang

Authors
  1. Jing Fan
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  2. Chong Xie
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  3. Jianzheng Jiang
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Correspondence to Jing Fan.

Additional information

The project supported by the National Natural Science Foundation of China (90205024, 10621202 and 10425211).

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Fan, J., Xie, C. & Jiang, J. Kinetic assessment of measured mass flow rates and streamwise pressure distributions in microchannel gas flows. Acta Mech Sin 23, 145–148 (2007). https://doi.org/10.1007/s10409-007-0060-y

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  • DOI: https://doi.org/10.1007/s10409-007-0060-y

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