处理轮毂转速的实验研究  

Experimental investigation on hub treatment rotation speed

作　　者：余春华[1] 陆亚钧[1] 李秋实[1] 周盛[1] 

机构地区：[1]北京航空航天大学航空发动机气动热力重点实验室,北京100191

出　　处：《实验流体力学》2009年第2期20-25,共6页Journal of Experiments in Fluid Mechanics

摘　　要：在低速环形叶栅实验台上圆弧斜槽处理轮毂相对静子扩压叶栅环的旋转频率对叶栅端壁区流动进行了影响实验探索。结果表明:轮毂处理能够消除叶栅端壁区的低速团,减小流动堵塞,叶栅流通能力最大提高了26.2%。轮毂处理消除端壁分离的能力与处理轮毂的旋转方向和相对转速密切相关。随着处理轮毂转速的增加,叶栅流通能力增加,并且存在局部非线性较强的转速范围。因此,轮毂处理的设计还应该考虑叶排与处理槽相对运动带来的流动非定常性。An experiment was made in an annual cascade to explore the unsteady flow mechanism of skewed slot hub treatment in removing flow separation near hub. The outlet total pressure recovery coefficient and total mass flow of the cascade was measured at different hub treatment rotation speed. The results reveal that the huh treatment could remove separation near hub and so enhance cascade total mass flow rate, which is improved by 26.2 % at the most. The effects are increased with the hub treatment speed increasing and there is a hub treatment rotation speed region in which the relation between cascade blockage decease and hub slot speed show a strong non-linear. It seems that huh and casing treatments design should include the flow unsteady between slots and blade rows.

关 键 词：轮毂处理 机匣处理 非定常激励 间隙泄漏流 环形叶栅 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]