Numerical Study of Particle Distribution in the Wake of Liquid-Particle Flows Past a Circular Cylinder Using Discrete Vortex Method

HUANG Yuan-dong; WU Wen-quan

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HUANG Yuan-dong, WU Wen-quan. Numerical Study of Particle Distribution in the Wake of Liquid-Particle Flows Past a Circular Cylinder Using Discrete Vortex Method[J]. Applied Mathematics and Mechanics, 2006, 27(4): 477-483.

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Numerical Study of Particle Distribution in the Wake of Liquid-Particle Flows Past a Circular Cylinder Using Discrete Vortex Method

Department of Environmental Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China

Received Date: 2004-06-18
Rev Recd Date: 2005-12-15
Publish Date: 2006-04-15

Abstract

Abstract

Particle-laden water flows past a circular cylinder are numerically investigated.The Dis crete vortex method was employed to evaluate the unsteady water flow fields and a Lagrangian ap proach was applied for tracking individual solid particles.A dispersion function was defined to repre sent the dispersion scale of the particle.The wake vortex patterns,the distributions and the time se ries of dispersion functions of particles with different Stokes numbers were obtained.Numerical re sults show that the particle distribution in the wake of the circular cylinder is closely related to the particles Stokes number and the structure of wake vortices:1) the intermediate sized particles with Stokes numbers,St,of 0.25,1.0 and 4.0 can not enter the vortex cores and concentrate near the pe ripheries of the vortex structures;2) in the circular cylinder wake,the dispersion intensity of particles decreases as St is increased from 0.25 to 4.0.
- liquid-particle,
- high Reynolds number,
- discrete vortex method(DVM),
- wake vortex,
- particle dispersion

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References(10)

References

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