Experimental and Numerical Investigation of the Unsteady Tip Leakage Flow in Axial Compressor Cascade

查看全文 作　　者：Chengqing [1]Li;Tingfeng [1]Ke;Jingxuan [1]Zhang;Hongwu [1]Zhang;Weiguang [1]Huang

机构地区：[1]Shanghai Advanced Research Institute,Chinese Academy of Sciences

出　　处：《Journal of Thermal Science》索引2013年第22卷第2期,共8页

基　　金：supported by the National Natural Sci-ence Foundation of China under Grant No.51106174 摘　　要：For convenience of both measurement and adjusting the clearance size and incidence, the current research is mainly conducted by experiments on an axial compressor linear cascade. The characteristics and the condition under which the unsteadiness of tip leakage flow would occur were investigated by dynamic measuring in different clearances, inlet velocities and incidences. From the experiment it is found that increasing tip clearance size or reducing rotor tip incidence can affect the strength of the tip clearance flow. Then the experimental results also indicate the tip leakage shows instability in certain conditions, and the frequency of unsteadiness is great influenced by inflow angle. The condition of occurrence of tip leakage flow unsteadiness is when the leakage flow is strong enough to reach the pressure side of the adjacent blade. The main cause of tip leakage flow unsteadiness is the tip blade loading. 关键词：泄漏流量轴流压缩机实验数值研究级联非定常叶尖间隙流动态测量

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Experimental and Numerical Investigation of the Unsteady Tip Leakage Flow in Axial Compressor Cascade

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