ANALYSIS OF VELOCITY ANNULAR EFFECT OF OSCILLATORY FLOW INSIDE PARALLEL PLATE CHANNEL

Tang Ke; Zhang Yu; Tang Wentao; Jin Tao; Zhang Xuejun

doi:10.6052/0459-1879-2012-2-20120208

Volume 44 Issue 2

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Tang Ke, Zhang Yu, Tang Wentao, Jin Tao, Zhang Xuejun. ANALYSIS OF VELOCITY ANNULAR EFFECT OF OSCILLATORY FLOW INSIDE PARALLEL PLATE CHANNEL[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(2): 252-258. doi: 10.6052/0459-1879-2012-2-20120208

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Tang Ke, Zhang Yu, Tang Wentao, Jin Tao, Zhang Xuejun. ANALYSIS OF VELOCITY ANNULAR EFFECT OF OSCILLATORY FLOW INSIDE PARALLEL PLATE CHANNEL[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(2): 252-258. doi: 10.6052/0459-1879-2012-2-20120208

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ANALYSIS OF VELOCITY ANNULAR EFFECT OF OSCILLATORY FLOW INSIDE PARALLEL PLATE CHANNEL

doi: 10.6052/0459-1879-2012-2-20120208

Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China

Funds: The project was supported by the National Natural Science Foundation of China (50890182).

Received Date: 2011-05-26
Rev Recd Date: 2011-09-11
Publish Date: 2012-03-18

Abstract

Abstract

This study focuses on the velocity-annular-effect (VAE) of compressible oscillatory flow inside parallel plate channel. By analyzing the mechanism of VAE, we conclude that VAE, which inevitably occurs in viscous oscillatory pipe flow, is most visible at the phase when the centerline velocity reaches zero. In order to quantitatively evaluate the VAE, coefficient of velocity annular effect (CVAE) was proposed as an index parameter, based on the slope of velocity profile when the centerline velocity reaches zero. Numerical computations with the index parameter CVAE were conducted to analyze the impacts of dimensionless parameters, i.e., Valensi number Va and maximum Reynolds number Re_max, on the VAE of oscillatory flow inside parallel plate channel.
- oscillatory flow,
- velocity annular effect,
- parallel plate channel,
- compressible fluid

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References(12)

References

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