高精度高分辨率格式模拟离心叶轮内湍流流场  

Application of Higher-order High Resolution Scheme for Turbulence Flow in Centrifugal Impeller Passage

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：《汽轮机技术》2003年第3期139-141,共3页Turbine Technology

基　　金：国家重点基础研究专项经费资助项目(G1999022306);国家自然科学基金资助项目(50076019)

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,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。A specially combined lowerupper factored implicit scheme based on the lowerupper symmetricGaussSeidel (LU-SGS) implicit scheme in conjunction with diagonalization and Gaussian elimination (GE) and a high accuracy and high resolution MUSCL TVD scheme were employed to simulate the complicated flow field in a centrifugal compressor impeller passage. The isolines of meridional velocity and relative flow angle on four crosssections were compared with experimental data. The comparison indicated that the simulation results agreed well with experimental data, and verified that the scheme was applicable to the numerical simulation of large converse pressure gradient flow. 

关 键 词：数值模拟 q—w山湍流模型 高分辨率格式 MUSCL TVD格式 LU—SGS—GE隐式格式 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]