猫耳气膜孔冷却性能数值模拟  

Numerical study on cooling performance of Nekomimi film holes

作　　者：于飞龙[1] 肖俊峰[1] 高松[1] 李园园[1] 段静瑶 蔡柳溪[1] 上官博[1] YU Feilong;XIAO Junfeng;GAO Song;LI Yuanyuan;DUAN Jingyao;CAI Liuxi;SHANGGUAN Bo(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054

出　　处：《热力发电》2018年第9期48-55,共8页Thermal Power Generation

基　　金：国家自然科学基金项目(51405384);中国华能集团有限公司总部科技项目(HNKJ16-H09)~~

摘　　要：为了研究透平静叶不同位置处猫耳气膜孔的冷却性能,对7种猫耳气膜孔结构在吹风比为0.5、1.0、1.5和2.0时的冷却效率曲线进行分析。结果表明:前向角大小是影响猫耳气膜孔冷却性能的关键参数;随着吹风比的增大,静叶压力面靠近前缘的气膜孔纵向平均冷却效率有降低趋势;提高前向角起始位置会使下游中心线附近冷却效率增大,但纵向平均气膜冷却效率较低。To investigate the cooling performance of Nekomimi film hole at different positions of turbine stator vane,film cooling efficiency curves of seven kinds of Nekomimi film hole structures at the blowing ratios of 0.5,1.0,1.5 and 2.0 are analyzed.The results show that the forward angle is the key parameter affecting the cooling performance of Nekomimi film hole.With the increasing of the blowing ratio,the longitudinal average cooling efficiency of the film hole near the leading edge of the stator vane pressure surface has a decreasing tendency.Besides,raising the starting position of the forward angle can increase the cooling efficiency near the downstream centerline but decrease the longitudinal average film cooling efficiency.

关 键 词：透平 静叶 猫耳 气膜孔 气膜冷却 吹风比 纵向平均 冷却效率 

分 类 号：TK479[动力工程及工程热物理—动力机械及工程]