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Applied Mathematics and Mechanics (English Edition) ›› 2000, Vol. 21 ›› Issue (8): 855-860.

• 论文 •    下一篇

RESEARCH ON THE EFFECT OF PARTICLE OF TWO-DIMENSIONAL SHEAR FLOW

林建忠1,2, 石兴1, 余钊圣1   

  1. 1. Department of Mechanics, Zhejiang University, Hangzhou 310027, P.R.China;
    2. Hangzhou Institute of Applied Engineering, Hangzhou 310012, P.R.China
  • 收稿日期:1999-04-07 修回日期:2000-03-01 出版日期:2000-08-18 发布日期:2000-08-18
  • 通讯作者: LIN Jian-zhong,Member of Editorial Committee,AMM
  • 基金资助:
    the Trans-Century Training Program Foundation for the Talentby the State Education Ministry

RESEARCH ON THE EFFECT OF PARTICLE OF TWO-DIMENSIONAL SHEAR FLOW

LIN Jian-zhong1,2, SHI Xing1, YU Zhao-sheng 1   

  1. 1. Department of Mechanics, Zhejiang University, Hangzhou 310027, P.R.China;
    2. Hangzhou Institute of Applied Engineering, Hangzhou 310012, P.R.China
  • Received:1999-04-07 Revised:2000-03-01 Online:2000-08-18 Published:2000-08-18
  • Supported by:
    the Trans-Century Training Program Foundation for the Talentby the State Education Ministry

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摘要： The two-way coupling model was adopted to study the two-dimensional gas-solid mixing layer. The flow was simulated by pseudo-spectral method and particles were traced with Lagrangian method. It is found that the concentration and the Stokes number of the particles have distinct effect on the flow not only accounting for the influence of the flow on the particles, but also the particles’ counteraction on the flow. The particles accelerate the dispersion of the vorticity and inhibit the variance of the flow and diminish the intensity of the coherent structure. The lifetime of the vortex is shortened. The pattern of particles’ distribution is similar to the results from one-way coupling model.

关键词: gas-solid flow, shear layer, coherent structures, two-way coupling

Abstract: The two-way coupling model was adopted to study the two-dimensional gas-solid mixing layer. The flow was simulated by pseudo-spectral method and particles were traced with Lagrangian method. It is found that the concentration and the Stokes number of the particles have distinct effect on the flow not only accounting for the influence of the flow on the particles, but also the particles’ counteraction on the flow. The particles accelerate the dispersion of the vorticity and inhibit the variance of the flow and diminish the intensity of the coherent structure. The lifetime of the vortex is shortened. The pattern of particles’ distribution is similar to the results from one-way coupling model.

Key words: gas-solid flow, shear layer, coherent structures, two-way coupling

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