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一、引言五十年代初,吴仲华教授提出了叶轮机械中气流三元流动的理论,通过反复解S_1,S_2流面来求解三元流场,奠定了应用三元流动模型进行叶轮机械气动设计的理论基础。六十年代后期以来,国外陆续发表了一些报告[2]～[7],介绍了应用三元理论进行跨音速压气机级设计的计算和试验结果。这些跨音速级都采用了多圆弧叶型。根据报告中给出的数据,可以认为级的平均性能以及沿径向气流参数分布的设计值和试验值比较符合,证明了在跨音速级的设计中应用三元理论可以得到良好的结果,也证明了多圆弧叶型是跨音速级设计中可供选择的一种叶型。
I. INTRODUCTION In the early 1950s, Professor Wu Zhonghua proposed the theory of ternary flow of impeller in impeller, solved the ternary flow field by repeatedly solving S 1 and S 2 flow surfaces, and laid the foundation for the application of ternary flow model to the aerodynamic design of impeller. Theoretical basis. Since the late 1960s, some reports [2] ~ [7] have been published successively abroad. The calculation and test results of transonic compressor design based on ternary theory are introduced. These transonic levels use a multi-arc leaf type. Based on the data presented in the report, it is considered that the average performance of the stage and the design and test values along the radial airflow parameter distribution are in good agreement, demonstrating that good results can be obtained by applying the ternary theory in the design of transonic levels It is proved that the multi-arc blade is an alternative leaf type in transonic speed design.