摘要
为控制压气机叶片吸力面与端壁处所形成的三维角区分离,本文在叶根处引入了从压力面到吸力面的槽道来控制角区分离流动。基于利用优化算法对叶根处槽道几何的优化结果,本文通过数值模拟和实验来分析槽道在不同进口攻角下对角区分离的控制效果。本文通过对比原始和开槽叶栅中总压损失、静压升和三维角区分离特征表明叶根处引入的槽道对角区分离有明显的控制效果。
In order to control the separation which occurs in the corner formed by the suction side of a compressor blade and the end-wall, a slot connecting the pressure side to the suction side can be used. Based on the optimization of the slot design at the root of the linear compressor cascade blades, experiments and numerical simulations have been conducted to evaluate the effects of the slot at several incidence angles. Total pressure loss coefficient, averaged static pressure rise coefficient and feature of the 3D separation in the cascade passages at 4° incidence angle have been compared for the cases with and without slots. The results show an obvious improvement when using such a slot for the control of corner separation.
出处
《风机技术》
2016年第6期9-18,共10页
Chinese Journal of Turbomachinery
基金
supported by the National Natural Science Foundation of China (No. 51676007, No. 51376001, No. 51420105008)
supported by the China Scholarship council (CSC)
关键词
压气机
角区分离
叶根开槽
被动控制
compressor
corner separation
slot bleeding
passive control
