离心式压缩机内三维粘性流动计算  

Three—Dimensional Viscous Flow Computation of Centrifugal Compressor Impeller

作　　者：郑群[1] 刘顺隆[1] 

机构地区：[1]哈尔滨工程大学动力工程系

出　　处：《哈尔滨工程大学学报》1997年第2期33-39,共7页Journal of Harbin Engineering University

摘　　要：采用时间相关的可压缩平均Ｎ－Ｓ方程组及ｋ方程湍流模型，应用任意拉格朗日—欧拉法（ＡＬＥ）进行离散，对离心压缩机叶轮内部的三维粘性流场进行了数值模拟ＡＬＥ法采用任意六面体网格单元，网格可按规定速度运动，因此适用于具有复杂几何边界和流场区域不断变化的流动问题以Ｅｃｋａｒｄｔ叶轮为例进行了数值计算。Time marching Faver average compressible Navier-Stokes equations and turbulent kinetic energy equation are discretised with Arbitrary Lagrange Euler (ALE) method.Three-dimensional viscous internal flow of centrifugal compressor impeller is numerically simulated with the above method.Arbitrary hexahedron and movable grids are adopted in the ALE method,therefore it is suitable for the computation of flow problems with complicated boundary and variable domain.Eckardt's impeller internal flow is computed and the vesults are nearly identical with the experimental results.

关 键 词：离心式 压缩机 粘性流动 N-S方程 

分 类 号：TH452[机械工程—机械制造及自动化]