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RESEARCH PAPERS

Numerical Simulation of Particulate Motion in Turbulent Gas-Solid Channel Flow

[+] Author and Article Information
R. L. Peskin

Geophysical Fluid Dynamics Program, Mechanical, Industrial, and Aerospace Engineering Dept., Rutgers University, New Brunswick, N.J. 08903

C. J. Kau

Ultrasystems, Inc., Irvine, Calif.

J. Fluids Eng 101(3), 319-325 (Sep 01, 1979) (7 pages) doi:10.1115/1.3448969 History: Received August 16, 1976; Online October 12, 2010

Abstract

A three-dimensional numerical model for turbulent shear flow in a channel with large Reynolds number is employed for the investigation of turbulent diffusion of finite inertia particulates. A stochastic nonlinear equation describing the motion of particles is integrated to obtain Lagrangian information. Special attention is paid to the effects of shear flow and wall boundary conditions. The results of these studies are compared to previous theoretical and empirical results. A cubic time dependency for separation is found at intermediate values of time while linear dependency is observed at large times. Schmidt numbers are always found to be smaller than one in the non-homogeneous region. It was concluded that special attention must be paid to appropriate computation times necessary to obtain a statistical equilibrium.

Copyright © 1979 by ASME
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