期刊
JOURNAL OF MECHANICS
卷 32, 期 2, 页码 237-244出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jmech.2015.63
关键词
Particle-laden flow; Particle-particle collisions; Particle-wall collisions; Channel flow
类别
资金
- National Science Council, R.O.C. [NSC 98-2221-E006-132]
Simulation of the 3-D, fully developed turbulent channel flows laden with various mass loading ratios of particles is made using an Eulerian-Lagrangian approach in which the carrier-fluid flow field is solved with a low-Reynolds-number k-epsilon turbulence model while the deterministic Lagrangian method together with binary-collision hard-sphere model is applied for the solution of particle motion. Effects of interparticle collisions and particle-wall collisions under different extents of wall roughness on particle dispersion are addressed in the study. A cost-effective searching algorithm of collision pair among particles is developed. It is found that the effects of inter-particle collisions on particle dispersion cannot be negligible when the ratio of the mean free time of particle to the mean particle relaxation time of particle is less or equal to O(10). In addition, the wall roughness extent plays an important role in the simulation of particle-wall collisions particularly for cases with small mass loading ratios.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据