用多块多网格方法数值模拟三维粘性流动  

NUMERICAL SIMULATION OF 3D VISCOUS FLOW USING A MULTIBLOCK MULTIGRTD METHOD

作　　者：刘建军[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100080

出　　处：《工程热物理学报》2002年第1期46-48,共3页Journal of Engineering Thermophysics

基　　金：国家重点基础研究与发展规划项目(No.G1999022309);中国科学院知识创新工程项目资助(No.KGCX2-301-03

摘　　要：本文给出了一个模拟三维粘性流动的数值方法．该方法来用高分辨率 ＴＶＤ Ｌａｘ－Ｗｅｎｄｒｏｆｆ格式求解三维雷诺平均Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程，使用Ｂａｌｄｗｉｎ－Ｌｏｍａｘ模型估计湍流粘性系数，用多重网格技术加速收敛，采用多块结构化网格处理复杂的物理域．文中给出了叶轮机械多个叶片排和透平排汽缸内的全三维粘性流动的数值结果．A numerical method for the simulation of 3D viscous flow has been presented. The high- resolution TVD Lax-Wendroff scheme is used to solve the 3D Reynolds averaged Navier-Stokes equations and the Baldwin-Lomax model is applied to estimate turbulence eddy viscosity. Multihrid algorithm is adopted to speed up the convergence to a steady state and multiblock method is incorporated to cope with complex physical domains. Numerical results of 3D viscous flows in multiple blade rows and a turbine exhaust hood are presented.

关 键 词：多块多网格 三维粘性流动 排汽缸 数值模拟 蒸汽轮机 叶片 湍流 粘性流体力学 

分 类 号：O357[理学—流体力学]