The importance of the forces acting on particles in turbulent flows

被引：242

作者：

Armenio, V ^{[1
]}

Fiorotto, V ^{[1
]}

机构：

[1] Univ Trieste, Dipartimento Ingn Civile, I-34127 Trieste, Italy

来源：

PHYSICS OF FLUIDS | 2001年 / 13卷 / 08期

关键词：

D O I：

10.1063/1.1385390

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The analysis of the importance of the forces that act over an ensemble of particles in a turbulent field has been carried out by using direct numerical simulation for a wide range of density ratios (2.65 < rho < 2650). It has been observed that, compared to the Stokes drag, the added mass is always negligible, the pressure drag is relevant for density ratios O(1), and the Basset force is appreciable for the whole range investigated. However, the effect of these forces on the particle dispersion is about 1% for rho similar to1 as well as for large density ratios. (C) 2001 American Institute of Physics.

引用

页码：2437 / 2440

页数：4

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