Basic study on the lattice Boltzmann method for application to many particle dispersions a uniform flow past a two-dimensional circular particle

被引：0

作者：

Satoh, Akira ^{[1
]}

Chantrell, R.W. ^{[2
]}

机构：

[1] Faculty of Systems Science and Technology, Akita Prefectural University, Tsuchiya-aza, Yuri-honjo-shi, Akita, 015-0055

[2] Physics Department, University of York, Heslington

来源：

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2009年 / 75卷 / 757期

关键词：

BGK collision model; Boundary conditions; Drag coefficient; Lattice boltzmann method; Pair of vortices; Particle dispersions; Uniform flow;

D O I：

10.1299/kikaib.75.757_1734

中图分类号：

学科分类号：

摘要：

We have conducted the basic study on the lattice Boltzmann method from the viewpoint of applying it to many particle suspensions, by considering a uniform flow past a two-dimensional circular particle (i.e., cylinder). Successful application of the lattice Boltzmann method to particle dispersions is strongly dependent on what rough lattice system can be used, since the motion of suspended particles and the flow field have to be solved simultaneously; unless a rough lattice system is used, suspensions with sufficient number of particles cannot be treated in simulations. Hence, the present study mainly discusses the dependence of the flow field on the fineness of the lattice system, and the validity of several boundary models, including a revised boundary one presented here. Even if a significantly rough lattice system with the lattice unit width of one-fifth as long as the particle diameter is used, the results give rise to physically reasonable agreement with the Navier-Stokes solutions. We may, therefore, conclude that the lattice Boltzmann method is a promising tool as a micro-simulation technique with multi-body hydrodynamic interactions for many particle suspensions.

引用

页码：1734 / 1741

页数：7

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