【摘要】 <正> 随着跨声速叶轮机械的广泛被采用,一个普遍被关心的问题是如何减少跨声速流动中的激波损失和随之产生的边界层分离损失。对于跨声速流动,从亚声速到超声速的光滑过渡是容易实现的,而相反的过程,从超声速到亚声速的光滑而连续的过渡则是相当困难的。在一般情况下,从超声速过渡到亚声速均伴随有激波。而依靠某种特殊有效而仔细的叶片成型方法才有可能避免这种激波的产生。国外研究无激波超临界叶栅已有多更多还原

【Abstract】 Based on the algorithm for solving the inverse problem of transonic cascades in which the pressure distribution on blade surfaces is directly taken as given condition, a numerical procedure has been developed for the design of shockfree supercritical compressor cascades. Some numerical means considering viscous influence is discussed. The one of two shock-free supercritical cascades obtained in design has been tested. It is found that the experimental data are in good agreement with the results predicted in calculations.更多还原