The Decay of Swirling Flows in a Type of Cross-Section-Varying Pipes

XIONG Ao-kui; WEI Qing-ding

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XIONG Ao-kui, WEI Qing-ding. The Decay of Swirling Flows in a Type of Cross-Section-Varying Pipes[J]. Applied Mathematics and Mechanics, 2001, 22(8): 879-884.

Citation:

XIONG Ao-kui, WEI Qing-ding. The Decay of Swirling Flows in a Type of Cross-Section-Varying Pipes[J]. Applied Mathematics and Mechanics, 2001, 22(8): 879-884.

Citation:

XIONG Ao-kui, WEI Qing-ding. The Decay of Swirling Flows in a Type of Cross-Section-Varying Pipes[J]. Applied Mathematics and Mechanics, 2001, 22(8): 879-884.

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The Decay of Swirling Flows in a Type of Cross-Section-Varying Pipes

Department of Mechanics and Engineering Science, Peking University, Beijing 100871, P R China

Received Date: 1999-03-12
Rev Recd Date: 1999-11-01
Publish Date: 2001-08-15

Abstract

Abstract

The decay of weakly swirling flows in a type of cross-section-varying pipes was discussed analytically.For laminar swirling flow,the feature of exponential decay was demonstrated.For turbulent swirling flow,in spite of the decay of circulation flux,a necessary condition for local circulation to amplify along downstream was obtained under the Boussinesq's hypothesis.
- swirling flow,
- decay,
- analysis of fluid flows

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References(2)

References

[1]	熊鳌魁,齐东文,魏庆鼎.渐变截面圆管道内粘性流动的相似性解[J].力学与实践,1999,21(1):34-36.
[2]	Ward-Smith A J.Internal Fluid Flow:The Fluid Dynamics of Flow in Pipes and Ducts[M].Ox-ford:Clarendon Press,1980.