Applied Mathematics and Mechanics (English Edition) ›› 2002, Vol. 23 ›› Issue (5): 542-548.

• 论文 • 上一篇    下一篇

RESEARCH ON THE EFFECT OF CYLINDER PARTICLES ON THE TURBULENT PROPERTIES IN PARTICULATE FLOWS

林建忠1, 林江1,2, 石兴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:2001-07-30 修回日期:2001-11-28 出版日期:2002-05-18 发布日期:2002-05-18
  • 基金资助:
    the National Natural Science Foundation for Outstanding Youth of China(19925210)

RESEARCH ON THE EFFECT OF CYLINDER PARTICLES ON THE TURBULENT PROPERTIES IN PARTICULATE FLOWS

LIN Jian-zhong1, LIN Jiang1,2, SHI Xing 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:2001-07-30 Revised:2001-11-28 Online:2002-05-18 Published:2002-05-18
  • Supported by:
    the National Natural Science Foundation for Outstanding Youth of China(19925210)

摘要: The fluid fluctuating velocity equations which include the term of cylinder particles were established. The turbulent intensity and Reynolds stress of fluid were obtained by averaging fluctuating velocity based on the solution of the fluctuating velocity equations. Above approach was used to solve the channel turbulent flows, and computational results were compared with the experimental ones for the case of single phase flow. The effects of volume fraction of particles, the ratio of particle length to diameter and the particle relaxation time on turbulent properties were illustrated by changing cylinder particle parameters. It is shown that particles play a restraining role to turbulent properties in the flows. The degree of restraint is directly proportional to the volume fraction of particle, the ratio of particle length to diameter and inversely proportional to particle relaxation time.

Abstract: The fluid fluctuating velocity equations which include the term of cylinder particles were established. The turbulent intensity and Reynolds stress of fluid were obtained by averaging fluctuating velocity based on the solution of the fluctuating velocity equations. Above approach was used to solve the channel turbulent flows, and computational results were compared with the experimental ones for the case of single phase flow. The effects of volume fraction of particles, the ratio of particle length to diameter and the particle relaxation time on turbulent properties were illustrated by changing cylinder particle parameters. It is shown that particles play a restraining role to turbulent properties in the flows. The degree of restraint is directly proportional to the volume fraction of particle, the ratio of particle length to diameter and inversely proportional to particle relaxation time.

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