The Size Effect on the Dispersion of a Particle in a Homogeneous Isotropic Turbulence

Xie Ding-guo

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Article Navigation > Applied Mathematics and Mechanics > 1990 > 11(6): 547-554

Xie Ding-guo. The Size Effect on the Dispersion of a Particle in a Homogeneous Isotropic Turbulence[J]. Applied Mathematics and Mechanics, 1990, 11(6): 547-554.

Citation:

Xie Ding-guo. The Size Effect on the Dispersion of a Particle in a Homogeneous Isotropic Turbulence[J]. Applied Mathematics and Mechanics, 1990, 11(6): 547-554.

Citation:

Xie Ding-guo. The Size Effect on the Dispersion of a Particle in a Homogeneous Isotropic Turbulence[J]. Applied Mathematics and Mechanics, 1990, 11(6): 547-554.

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The Size Effect on the Dispersion of a Particle in a Homogeneous Isotropic Turbulence

Xie Ding-guo

Department of Mechanics, Zhejiang University, Hangzhou

Received Date: 1989-05-12
Publish Date: 1990-06-15

Abstract

Abstract

The mechanism of the response motion of a suspended particle to turbulent motion of its surrounding fluid is different according to size of turbulent eddies. The particle is dragged by the viscous force of large eddies, and meanwhile driven randomly by small eddies. Based on this understanding, the dispersion of a particle with finite size in a homogeneous isotropic turbulence is calculated in this study. Results show that there are two competing effects: when enhanced by the inertia of a particle, the long-term particle diffusivity is reduced by the finite size of the particle.

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References(11)

References

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