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叶轮机械气动计算正问题和临界流量

王平洽   

  1. 中国科学院计算中心
  • 出版日期:1980-04-20 发布日期:1980-04-20

王平洽. 叶轮机械气动计算正问题和临界流量[J]. 数值计算与计算机应用, 1980, 1(4): 225-232.

THE COMPUTATION OF DIRECT PROBLEMS AND CRITICAL MASS FLOW IN TURBOMACHINERY

  1. Wang Ping-qia Computing Centre, Academia Sinica
  • Online:1980-04-20 Published:1980-04-20

流线曲率法是叶轮机械气动计算的常用算法,在国内的应用也很普遍.但在计算正问题时,常遇到困难,使应用范围受到限制;除低音速流(流场全部亚音)外,当进口流量稍大,流场中出现局部跨、超音时,很难算出准确的结果。究竟原因何在,如何算出准确的结果,是应用此方法的人们所共同关心的问题.

The method of streamline curvature is widely used in the analysis of turbomachinery flows.But in the computation of direct problems, we often encounter difficulties. There does notexist a solution when the inlet mass flow is larger than the critical mass one, Which isunknown When the former is close to the latter, we shall meet with computational difficulties,so that considerable effort must be made to obtain the accurate results. In this paper, the exist-ence and uniqueness of the solutions of the direct problems are analyzed and discussed. A newcomputational technique is given, and can be used to compute the critical mass flow. We canthen obtain the solutions of the direct problems under the condition of the critical mass flow.It is proved that the results are of the second order accuracy.

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