北京师范大学学报（自然科学版）Issue(3)：243-246,4.
格子玻尔兹曼模拟壁面剪切应力的精度
PRECISION OF WALL SHEAR STRESS MEASUREMENT IN LATTICE BOLTZMANN SIMULATIONS
摘要
Abstract
Two-dimensional inclined Poiseuille flow was mimicked using lattice Bhatnagar-Gross-Krook (LBGK)Boltzmann model and multiple-relaxation-time (MRT)lattice Boltzmann model under bounce-back and curved boundary conditions.Error in wall shear stress measurement was compared under various inclining angles,grid sizes,and Reynolds numbers.Data showed that the curved scheme could compute more accurately wall shear stress when assessed on the fluid nodes closest to the wall.Under bounce-back boundary condition, wall shear stress should be computed on fluid nodes nearest to nodes which are closest to the wall.MRT scheme is slightly superior to LBGK for assessment of wall shear stress.关键词
格子Boltzmann方法/壁面剪切应力/边界条件Key words
lattice Boltzmann method/wall shear stress/boundary condition引用本文复制引用
敦志娅,康秀英..格子玻尔兹曼模拟壁面剪切应力的精度[J].北京师范大学学报（自然科学版）,2014,(3):243-246,4.基金项目
教育部留学回国人员科研启动基金资助项目 （）
