国防科技大学学报2024，Vol.46Issue(2)：153-161,9.DOI:10.11887/j.cn.202402016
跨音速流动中涡轮动叶叶顶的气膜冷却特性分析
Film cooling characteristics analysis of turbine blade tip in transonic flow
摘要
Abstract
To grasp the film cooling characteristics of the turbine blade tip in transonic flow,the pressure sensitive paint technique was used to experimentally obtain the effects of the tip clearance gap and mass flow ratio on the film cooling performance of the blade tip.The results indicate that,under conditions of low mass flow ratio,increasing the tip clearance height effectively enhances the film coverage in the mid-chord region of the blade tip.However,when the mass flow ratio is high,changes in the tip clearance height have an insignificant effect on the distribution of film cooling efficiency in this region.Under conditions of small tip clearance heights,the cooling coverage in the mid-chord region deteriorates gradually as the mass flow ratio increases.In contrast,with larger tip clearance heights,an improvement in cooling coverage is only observed when the mass flow ratio increases from 0.1%+0.05%to 0.14%+0.07%.关键词
动叶叶顶/跨音速流动/叶顶间隙高度/质量流量比/气膜冷却Key words
blade tip/transonic flow/tip clearance gap/mass flow ratio/film cooling分类
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张博伦,夏军,胡其高,朱惠人..跨音速流动中涡轮动叶叶顶的气膜冷却特性分析[J].国防科技大学学报,2024,46(2):153-161,9.基金项目
国家部委基金资助项目(ZZKY-JJ-21-01) （ZZKY-JJ-21-01）
青年自主创新科学基金资助项目(ZK2023-039) （ZK2023-039）
