Numerical Simulation of Viscous Flow over a Grooved Surface by the Lattice Boltzmann Method  

作　　者：黄桥高 潘光 

机构地区：[1]School of Marine Science and Technology, Northwestern Polytechnical University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2016年第2期143-150,共8页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.11502210 and 51279165)

摘　　要：The motivation of this work is to investigate a grooved surface's drag reduction. The viscous flow through a two-dimensional microchannel with the grooved surface is analyzed by the lattice Boltzmann method(LBM). The effects of the grooved surface on the streamline patterns, the velocity distributions near wall region and the fluid shear stress distributions on the walls at different Reynolds numbers are studied. In addition, the influences of the groove's geometrical parameters on the grooved surface's drag reduction are discussed. The numerical results confirm the grooved surface's drag reduction and present the drag reduction law of the grooved surface.The motivation of this work is to investigate a grooved surface＇s drag reduction. The viscous flow through a two-dimensional microchannel with the grooved surface is analyzed by the lattice Boltzmann method（LBM）. The effects of the grooved surface on the streamline patterns, the velocity distributions near wall region and the fluid shear stress distributions on the walls at different Reynolds numbers are studied. In addition, the influences of the groove＇s geometrical parameters on the grooved surface＇s drag reduction are discussed. The numerical results confirm the grooved surface＇s drag reduction and present the drag reduction law of the grooved surface.

关 键 词：grooved surface drag reduction viscous flow lattice Boltzmann method(LBM) momentum-exchange method 

分 类 号：O357.5[理学—流体力学]