A drag force correlation for approximately cubic particles constructed from identical spheres

被引：27
|
作者：
Chen, Y. [1 ]
Third, J. R. [1 ]
Mueller, C. R. [1 ]
机构：
[1] ETH, Dept Mech & Proc Engn, Lab Energy Sci & Engn, CH-8092 Zurich, Switzerland
来源：
CHEMICAL ENGINEERING SCIENCE | 2015年 / 123卷
关键词：
Drag force; Simulations; Lattice Boltzmann; Approximately cubic particles; MAGNETIC-RESONANCE MEASUREMENTS; DISCRETIZED BOLTZMANN-EQUATION; NUMERICAL SIMULATIONS; PARTICULATE SUSPENSIONS; NONSPHERICAL PARTICLES; BIDISPERSE ARRAYS; STOKES EQUATIONS; FLUIDIZED-BED; FLOW; MONODISPERSE;
D O I：
10.1016/j.ces.2014.10.002
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The lattice Boltzmann method has been used to compute the drag force acting on assemblies of approximately cubic particles constructed from eight spheres for a wide range of Reynolds numbers. Based on the simulation data we propose a new drag force correlation for assemblies of approximately cubic particles. We have compared the drag force obtained with that predicted by the correlation proposed by Beetstra el al. (2007), originally proposed for spheres, by considering either the drag acting on individual spheres or the drag acting on an approximately cubic particle composed of eight spheres. The comparisons showed that Beetstra's correlation cannot predict the system well. The correlation proposed in this paper enables Euler-Euler and Euler-Lagrangian simulations of approximately cubic particles, allowing the influence of the solid volume fraction in these models to be assessed. (C) 2014 Elsevier Ltd. All rights reserved,
引用
收藏
页码：146 / 154
页数：9
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