中文摘要：

本文采用数值计算方法研究了机匣蜂窝和叶顶蜂窝对涡轮叶栅动叶顶部间隙泄漏流动特性及其损失产生和分布的影响。结果表明：相比于常规无蜂窝密封的叶栅,机匣蜂窝和叶顶蜂窝在间隙泄漏流动的抑制方面都有积极的效果,相对间隙泄漏量分别降低了52%和8.2%;由于机匣蜂窝与主流的接触面积较大带来额外损失,使得涡轮叶栅出口损失增加了约2.66%,而叶顶蜂窝内叶栅出口损失减少了1.87%。

英文摘要：

In this paper,numerical method is adopted to investigate the influence of honeycomb casing and honeycomb tip on the tip leakage flow and associated loss in a turbine cascade.Results show that,compared to the turbine cascade with conventional tip structure,both honeycomb casing and honeycomb tip have inhibiting effect on tip leakage flow,and the leakage flows are reduced by52%and 8.2%respectively.Honeycomb casing has large contact area between honeycomb cavities and main flow,which causes additional loss,and results in a 2.66%rise in loss.Honeycomb tip has smaller contact area,which means a less effect on passage flow and causes the loss reduced by nearly1.87%.