LAGRANGIAN MODEL ON THE TURBULENT MOTION OF SMALL SOLID PARTICLE IN TURBULENT BOUNDARY LAYER FLOWS

Applied Mathematics and Mechanics (English Edition) ›› 1997, Vol. 18 ›› Issue (3): 297-306.

LAGRANGIAN MODEL ON THE TURBULENT MOTION OF SMALL SOLID PARTICLE IN TURBULENT BOUNDARY LAYER FLOWS

刘小兵¹, 程良骏²

1. Sichuan Institute of Technology, Chengdu 611744, P. R. China;
2. Huazhong University of Science & Technology, Wuhan 430074, P. R. China

收稿日期:1995-06-07 修回日期:1996-10-30 出版日期:1997-03-18 发布日期:1997-03-18

LAGRANGIAN MODEL ON THE TURBULENT MOTION OF SMALL SOLID PARTICLE IN TURBULENT BOUNDARY LAYER FLOWS

Liu Xiaobing¹, Cheng Liangjun²

1. Sichuan Institute of Technology, Chengdu 611744, P. R. China;
2. Huazhong University of Science & Technology, Wuhan 430074, P. R. China

Received:1995-06-07 Revised:1996-10-30 Online:1997-03-18 Published:1997-03-18

摘要/Abstract

摘要： The Lagrangian equations of motion of Small solid particle in turbulent boundary layer flows, taking into account the effects of the drag force caused by the wall presence, the Saffman and the Magus lift forces et al., is studied. Using the spectral method. anavtical expressions relating to the Lagrangian power spectra of particle velocity to that of the fluid are dereloped and the results are used to evaluate rarious response statistics. In this paper, the results clearly show that the turbulent diffusivity of the particle may be larger than that of fluid for a period of long-time.

关键词: Lagrangian model, turbulent motion, small solid particle, turbulent boundary layer

Abstract: The Lagrangian equations of motion of Small solid particle in turbulent boundary layer flows, taking into account the effects of the drag force caused by the wall presence, the Saffman and the Magus lift forces et al., is studied. Using the spectral method. anavtical expressions relating to the Lagrangian power spectra of particle velocity to that of the fluid are dereloped and the results are used to evaluate rarious response statistics. In this paper, the results clearly show that the turbulent diffusivity of the particle may be larger than that of fluid for a period of long-time.

Key words: Lagrangian model, turbulent motion, small solid particle, turbulent boundary layer

刘小兵;程良骏. LAGRANGIAN MODEL ON THE TURBULENT MOTION OF SMALL SOLID PARTICLE IN TURBULENT BOUNDARY LAYER FLOWS[J]. Applied Mathematics and Mechanics (English Edition), 1997, 18(3): 297-306.

Liu Xiaobing;Cheng Liangjun. LAGRANGIAN MODEL ON THE TURBULENT MOTION OF SMALL SOLID PARTICLE IN TURBULENT BOUNDARY LAYER FLOWS[J]. Applied Mathematics and Mechanics (English Edition), 1997, 18(3): 297-306.

参考文献

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LAGRANGIAN MODEL ON THE TURBULENT MOTION OF SMALL SOLID PARTICLE IN TURBULENT BOUNDARY LAYER FLOWS

LAGRANGIAN MODEL ON THE TURBULENT MOTION OF SMALL SOLID PARTICLE IN TURBULENT BOUNDARY LAYER FLOWS

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