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REVIEW ARTICLES: Particle-Turbulence Interaction

Problems in Modeling Disperse Two-Phase Flows

[+] Author and Article Information
J. C. R. Hunt, R. J. Perkins, J. C. H. Fung

Department of Applied Mathematics and Theoretical Physics, Silver St, Cambridge CB3 9EW, UK

Appl. Mech. Rev 47(6S), S49-S60 (Jun 01, 1994) doi:10.1115/1.3124441 History: Online April 29, 2009

Abstract

This review touches on some of the fundamental problems in this subject and some practical solutions, viz: (i) the force on a small rigid particle, solid or gaseous; a general heuristic expression is presented for a spherical particle based on combining the limiting cases of inviscid non-uniform flow and simple viscous flow; (ii) how the lift and acceleration forces produce non-uniform distributions of bubbles in non-uniform turbulent pipe flows inclined at different angles to the horizontal; computer simulations are presented using the results of (i); (iii) the relative contributions of the spatial and temporal fluctuations to the difference between the diffusivities of solid and fluid particles; an idealised model of small inertial particles in turbulent motion gives useful insight; (iv) the differences in the spectra of their velocities; hypotheses based on (iii) tested by computing the trajectories of particles in velocity fields that simulate turbulence (Kinematic Simulation); (v) how low concentrations of particles interact between each other and affect the average flow field.

Copyright © 1994 by American Society of Mechanical Engineers
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