Simulating High Reynolds Number Flow by Lattice Boltzmann Method

作     者：康秀英 刘大禾 周静 金永娟 

作者机构：AppliedOpticsBeijingAreaMajorLaboratoryDepartmentofPhysicsBeijingNormalUniversityBeijing100875 InstituteofHematologyChineseAcademyofMedicalSciencesTianjin300020 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2005年第22卷第6期

页      面：1456-1459页

核心收录：

学科分类：071011[理学-生物物理学] 0710[理学-生物学] 07[理学] 080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：国家自然科学基金 国家教育部项目 

主　　题：BGK LBM Zou 

摘      要：A two-dimensional channel flow with different Reynolds numbers is tested by using the lattice Boltzmann method under different pressure and velocity boundary conditions. The results show that the simulation error increases, and the pressure and the flow rate become unstable under a high Reynolds number. To improve the simulation precision under a high Reynolds number, the number of fluid nodes should be enlarged. For a higher Reynolds-number flow, the velocity boundary with an approximately parabolic velocity profile is found to be more adaptive. Blood flow in an artery with cosine shape symmetrical narrowing is then simulated under a velocity boundary condition. Its velocity, pressure and wall shear stress distributions are consistent with previous studies.