Numerical simulation of viscous flow over non-smooth surfaces
Numerical simulation of viscous flow over non-smooth surfaces
复制标题
非光滑表面粘性流的数值模拟
DOI：
10.1016/j.camwa.2010.04.013
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发表时间：
2011-06-01
影响因子：
2.9
通讯作者：
Luo, Hongwen
中科院分区：
文献类型：
--
作者：
Ding, Lixia;Shi, Weiping;Luo, Hongwen
采用晶格玻尔兹曼方法对非光滑表面上的不可压缩粘性流动进行了数值模拟。提出了一种处理速度场二阶精度曲线边界的数值策略。阻力计算采用动量交换法进行。在圆凹、圆凸、三角形凹、三角形凸、规则正弦波和不规则正弦波等不同形状的曲面上得到了流线轮廓。详细讨论了流型。研究了不同非光滑表面上的速度分布。数值结果表明，晶格玻尔兹曼方法可靠、准确、易于实现，可为工程实践提供有价值的帮助。(C) 2010 Elsevier Ltd.版权所有。
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.