论文部分内容阅读
针对离心压缩机叶片载荷对叶轮气动性能的影响,按照盘、盖侧的最佳载荷匹配,利用反问题计算原理设计出相应的离心叶轮,采用数值方法计算分析了各自叶型的效率、压比和能量头等气动参数,确定最佳载荷匹配原则。在此基础上对载荷沿流向的梯度变化进行再优化,发现在一定程度内较小的载荷梯度有利于减小流动损失,提高叶轮效率,但过于平缓的载荷反而使性能略有降低。本文结果为高性能离心叶轮的气动设计提供依据。
According to the influence of the centrifugal compressor blade load on the aerodynamic performance of the impeller, according to the optimal load matching of the disk and the cover side, the corresponding centrifugal impeller is designed by using the inverse problem calculation principle. The efficiency, pressure ratio And the energy first class aerodynamic parameters, determine the best load matching principle. On the basis of this, the load gradient along the flow direction is re-optimized. It is found that the smaller load gradient can reduce the flow loss and improve the efficiency of the impeller to a certain extent. However, the load is too gentle and the performance is slightly reduced. The results of this paper provide the basis for aerodynamic design of high performance centrifugal impeller.