Gravity-driven clustering of inertial particles in turbulence

被引：22

作者：

Park, Yongnam ^{[1
]}

Lee, Changhoon ^{[1
,2
]}

机构：

[1] Yonsei Univ, Dept Mech Engn, Seoul 120749, South Korea

[2] Yonsei Univ, Dept Computat Sci & Engn, Seoul 120749, South Korea

来源：

PHYSICAL REVIEW E | 2014年 / 89卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

PREFERENTIAL CONCENTRATION; STATISTICS;

D O I：

10.1103/PhysRevE.89.061004

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report a different kind of particle clustering caused purely by gravity, discovered in our simulation of particle-laden turbulence. Clustering in a vertical strip pattern forms when strong gravity acts on heavy particles. This phenomenon is explained by the skewness of the flow velocity gradient in the gravitational direction experienced by particles, which causes horizontal convergence of particles.

引用

页数：5

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