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本文提出一种满足自由流线边界条件二元叶栅的新解法——两个相关流场交叉迭代的计算方法,统一地论述了普通叶栅的上下游区、分流叶片叶栅和串列叶栅的二元亚音速流场计算问题,计算程序可以通用于这三种情况。 在分流叶片叶栅和串列叶栅的计算中提出了一种流场最小干扰的物理条件,从而可以计算出由分流叶片或分流面所形成的两个叶道之间的流量分配比。 介绍了数值计算结果,并与试验数据作了比较,这些计算与比较初步验证了本文方法,以及所建议的计算流量分配比物理条件的合理性,并对分流叶片叶轮的气动设计提出了一些有益的设想。
This paper presents a new solution to the problem of free flow line boundary conditions cascade cascades - two calculation methods of cross-iteration of the relevant flow field, and discusses the upstream and downstream areas of ordinary cascades, splitter cascades and tandem leaves Binary subsonic flow field calculation of the grid, the calculation program can be used in all three cases. In the calculation of splitter cascades and tandem cascades, a physical condition of minimal disturbance of flow field is proposed, so that the flow distribution ratio between two blades formed by splitter blades or splitter surfaces can be calculated. The results of numerical calculation are introduced and compared with the experimental data. These calculations and comparisons validate the proposed method and the rationality of the proposed physical distribution ration of flow distribution, and provide some benefits to the aerodynamic design of splitter impeller The idea.