叶顶吹气对低速轴流压气机间隙流动 影响的数值研究

戴丽萍; 张辉; 康顺

叶顶吹气对低速轴流压气机间隙流动影响的数值研究

华北电力大学能源与动力工程学院动力工程系电站设备状态检测与控制教育部重点实验室,北京 102206

基金项目: 2009年高等学校博士学科点新教师基金(20090036120003); 2007年度华北电力大学校内博士学位教师基金

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出版历程
- 收稿日期: 2009-11-19
- 修回日期: 2010-03-26
- 刊出日期: 2010-12-28

Numerical simulation of the effect of blade tip blowing on a low speed axial compressor tip clearance flow

Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education,Department of Power,School of Energy and Power Engineering, North China Electric Power University,Beijing 102206,China

摘要

摘要: 为了评价叶片顶部吹气对间隙流动的影响,采用NUMECA软件对带有叶顶吹气的叶栅流场进行了计算,并将其与不带吹气的基准叶栅流场结果进行了对比、分析.结果表明:叶顶吹气的位置和角度都对间隙流动有着较大影响.按周向和径向方向吹气时对泄漏流量密度的分布有一定的影响,但对稳定工况范围的影响不大;按一定的轴向方向吹出时可抑制间隙引起的流动分离,进而增大压气机的失速裕度.
- 压气机 /
- 叶顶吹气 /
- 间隙流 /
- 失速裕度 /
- 数值计算
Abstract: To understand the comprehensive effects of blade tip blowing,the flow fields of a low speed axial compressor cascade with/without blade tip blowing were simulated and analyzed.The results show that both blowing positions and blowing directions have important effects on tip leakage flows.Though blowing in radial and circumferential direction can change the distribution of tip leakage flow rate density,it is little beneficial to the stability improvement;blowing in axial direction can suppress the separation due to tip leakage vortex and then improve stall margin effectively.
- compressor /
- blade tip blowing /
- tip clearance flow /
- stall margin /

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参考文献(12)

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