不同叶顶几何形状对压气机叶栅间隙泄漏流动的影响  

Influence of different tip geometries on the leakage flow of compressor cascade

作　　者：钟兢军[1] 桑则林 韩少冰[1] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《大连海事大学学报》2016年第1期65-71,共7页Journal of Dalian Maritime University

基　　金：国家自然科学基金资助项目(51436002;51406021);辽宁省高校创新团队支持计划资助项目(LT2015004);辽宁省教育厅科学研究一般项目资助(L2014197);中央高校基本科研业务费专项资金资助项目(3132015208;3132014319)

摘　　要：为揭示不同叶顶几何形状对压气机叶栅间隙泄漏流动的影响,以压气机平面叶栅作为研究对象,应用数值模拟方法,采用6种不同的叶顶几何形状对比研究泄漏涡的变化.结果表明,合理的叶顶几何形状可以在一定程度上降低叶尖损失,不同叶尖几何方案对于改善气流偏转、提高叶栅流通能力有较好效果.吸力面全部片削叶顶对调控叶尖损失、改善叶栅性能效果最为显著.In order to reveal the influence of different tip geometries on the leakage flow of the compressor cascade gap,the numerical simulation was carried out to study the variation of the leakage vortex with six different tip geometries in a compressor cascade. Results show that the reasonable tip geometry can reduce the loss of the tip of a certain extent,and different geometric schemes of tip have good effect on improving the air flow deflection and flow capacity of cascade. The suction surface of the blade tip cutting is the most effective method to control the loss and improve the performance of the cascade.

关 键 词：泄漏流 泄漏涡 叶顶几何形状 总压损失 

分 类 号：TK474.8[动力工程及工程热物理—动力机械及工程]