离心叶轮内三维湍流流场的数值分析  

Numerical Analysis of a Three-dimensional Turbulent Flow Field in a Centrifugal Impeller

作　　者：谭大治[1] 袁新[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《热能动力工程》2003年第6期568-571,共4页Journal of Engineering for Thermal Energy and Power

基　　金：国家重点基础研究专项经费资助项目 (G19990 2 2 3 0 6) ;国家自然科学基金资助项目 (5 0 0 760 19)

摘　　要：应用LU -SGS -GE隐式格式和改良型高阶MUSCLTVD格式 ,通过求解全三维可压缩Reynolds平均的Navier -Stokes方程和低Reynolds数q -ω双方程湍流模型 ,对后弯角 30°的Krain离心叶轮在设计工况下通道内复杂的三维流动进行了计算。计算结果与实验数据符合良好 ,说明该方法适用于大逆压梯度流动的数值模拟 ,也可以用来深入研究离心压气机内各种复杂的三维流动现象。Through the use of a LU-SGS-GE implicit scheme and an improved version of high-order MUSCL TVD scheme and by solving for a full three-dimensional compressible Reynolds time-averaged Navier-Stokes equation and low Reynolds number q-ω dual equation turbulent flow model calculated is the complicated three-dimensional flow in the impeller passage of a centrifugal compressor. The results of the calculation are in good agreement with those obtained by tests. This shows that the method under discussion is applicable for the numerical simulation of flows featuring great inverse-pressure gradients. Moreover, it can also be employed to conduct the in-depth research of various complicated three-dimensional flow phenomena in a centrifugal compressor.

关 键 词：离心叶轮 数值模拟 三维湍流流场 高分辨率格式 MUSCL TVD格式 LU—SGS—GE隐式格式 离心压气机 

分 类 号：TK474.8[动力工程及工程热物理—动力机械及工程]