Statistics of Particle Suspensions in Turbulent Channel Flow

被引：3

作者：

Zhao, Lihao ^{[1
]}

Andersson, Helge I. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, Fluids Engn Div, N-7491 Trondheim, Norway

来源：

COMMUNICATIONS IN COMPUTATIONAL PHYSICS | 2012年 / 11卷 / 04期

关键词：

Spherical particles; DNS; turbulence; sampling; Reynolds number effects; DIRECT NUMERICAL-SIMULATION; DEPOSITION; MECHANISMS;

D O I：

10.4208/cicp.080510.150511s

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Particle dynamics in a turbulent channel flow is considered. The effects of particle concentration and Reynolds number on the particle velocity statistics are investigated. Four different particle response times, tau(+)=1, 5, 30 and 100, are examined for three different Reynolds numbers, Re-*=200, 360 and 790 (based on channel height and friction velocity). The particle concentration evolves with time and statistics obtained during three different sampling periods might be distinctly different. The mean and fluctuating particle velocities are substantially affected both by the particle response time and by the Reynolds number of the flow.

引用

页码：1311 / 1322

页数：12

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