Viscous micropump simulation by particle/continuum methods |
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Authors: | Sheng Wang Xi-lian Luo Kang-bin Lei Zhao-lin Gu and Kiwamu Kase |
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Institution: | (1) Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QB, H3G 1M8, Canada; |
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Abstract: | A novel viscous micropump consisting of a cylindrical rotor eccentrically placed inside a microchannel is simulated by the
two Volume-CAD (V-CAD) framework-based flow solvers, i.e., the direct simulation Monte Carlo (DSMC) package (named as V-DSMC)
and the Navier-Stoke solver (named as V-Flow). V-DSMC is used in the case of the pump applied to gas, while V-Flow is applied
to model the pump in the case of liquid working medium. The pumping performance curves under different liquid media with the
variation of Reynolds number, as well as under different eccentricity factors are obtained. The performance and the flow filed
characteristics are very sensitive to the tangential momentum accommodation coefficient in the case of gas medium. Three recirculations
exist in the flow field, and the sizes of recirculation are different at the different operating points in a performance curve. |
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Keywords: | |
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