两种多重网格法求解径流叶轮机械可压流动  

Comparison of two multi-grid schemes for radial turbo-machinery compressible flow

作　　者：衣同训[1] 姜勇[1] 索沂生[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《推进技术》2000年第6期52-55,共4页Journal of Propulsion Technology

基　　金：兵器工业部预研基金项目! (2 0 2 1C 910 6 )

摘　　要：为了加快数值求解叶轮机械内部流场的收敛速度 ,并改善计算结果 ,在数值求解径流叶轮机械可压流动的计算中 ,采用了由微元、二重和三重网格逐级转入和同时转入的两种多重网格法。对德国宇航局KrainH设计的离心压气机内部流场的数值计算表明 ,两种多重网格法的计算结果差别不大 ,尽管在收敛速度方面存在差异 ,但均与测量数据吻合比较好。To accelerate the converging process of turbomachinery CFD and improve the calculation results, two new multi-grid schemes are used to calculate the internal flow field inside the radial turbomachinery The calculation of Krain H centrifugal impeller shows that the simulation results of the two methods are very similar and both fit fairly well with the measurement In addition, both methods greatly improve the converging speed while some difference exists between the two methods in converging process

关 键 词：径向流 流场仿真 多重网格 时间推进 叶轮机械 

分 类 号：TH112.3[机械工程—机械设计及理论] O354[理学—流体力学]