Numerical simulation of viscous flow over non-smooth surfaces

被引：21
|
作者：
Ding, Lixia [2 ]
Shi, Weiping [1 ]
Luo, Hongwen [1 ]
机构：
[1] Jilin Univ, Coll Math, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Management, Changchun 130025, Peoples R China
来源：
COMPUTERS & MATHEMATICS WITH APPLICATIONS | 2011年 / 61卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Lattice Boltzmann method; Drag reduction; Rough surface; Curved boundary; The momentum-exchange method; Incompressible fluid; LATTICE BOLTZMANN METHOD; DRAG REDUCTION; BOUNDARY-CONDITIONS; ROUGHNESS; EQUATION; MODEL;
D O I：
10.1016/j.camwa.2010.04.013
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
The incompressible viscous flow over several non-smooth surfaces is simulated numerically by using the lattice Boltzmann method. A numerical strategy for dealing with a curved boundary with second-order accuracy for velocity field is presented. The drag evaluation is performed by the momentum-exchange method. The streamline contours are obtained over surfaces with different shapes, including circular concave, circular convex, triangular concave, triangular convex, regular sinusoidal wavy and irregular sinusoidal wavy, are obtained. The flow patterns are discussed in detail. The velocity profiles over different kinds of non-smooth surfaces are investigated. The numerical results show that the lattice Boltzmann method is reliable, accurate, easy to implement, and can provide valuable help for some engineering practices. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3703 / 3710
页数：8
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