FINITE-PARTICLE SIZE EFFECTS IN DISPERSE 2-PHASE FLOWS

被引：13

作者：

PROSPERETTI, A

ZHANG, DZ

机构：

[1] Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, 21218, MD

来源：

THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS | 1995年 / 7卷 / 06期

关键词：

D O I：

10.1007/BF00418141

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Three aspects of the finite radius of spherical particles in disperse two-phase flows are described. The first one is the relation between the exact volume fraction and the widely used approximation nv (n is the particle number density and v is the particle volume). The approximation affects the behavior of the effective equations at short wavelengths with possible consequences on stability and hyperbolicity. Secondly, the dilute theory of inviscid suspensions is corrected retaining the next leading order in the particle size and an application of this result to the linear problem is described. Thirdly, it is shown how several important properties of suspensions such as effective thermal conductivity and viscosity depend on the subtle effect of translation of the average fields over distances of the order of the particle size.

引用

页码：429 / 440

页数：12

共 16 条

[1] THE FORCE EXERTED ON A BODY IN INVISCID UNSTEADY NON-UNIFORM ROTATIONAL FLOW [J].