Numerical investigation on adiabatic film cooling effectiveness and heat transfer coefficient for effusion cooling over a transverse corrugated surface

查看全文 作　　者：Qu [1]Lihong;Zhang [1,2]Jingzhou;Tan [1]Xiaoming;Wang [1]Minmin

机构地区：[1]College of Energy and Power Engineering, Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;[2]Collaborative Innovation Center of Advanced Aero-Engine, Beijing 100083, China

出　　处：《Chinese Journal of Aeronautics》索引2017年第30卷第2期,共8页

摘　　要：Three-dimensional numerical computations are conducted to investigate the effects of the blowing ratio and corrugation geometry on the adiabatic film cooling effectiveness as well as the heat transfer coefficient over a transverse corrugated surface.It is noticeable that the adiabatic wall temperature on the wavy valley of the transverse corrugated surface is relatively lower than that on the wavy peak.Surface corrugation has a relatively obvious influence on the laterallyaveraged adiabatic film cooling effectiveness in the region where the effusion film layer is developed,but has little influence in the front region.Compared to a flat surface,the transverse corrugated surface produces a smaller adiabatic film cooling effectiveness and a higher heat transfer coefficient ratio.The effusion cooling difference between the flat and corrugated surfaces behaves more obviously under a small aspect ratio of the wavy corrugation. 关键词：断热的电影冷却有效性流出冷却加热转移数字计算横向的弄皱的表面

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Numerical investigation on adiabatic film cooling effectiveness and heat transfer coefficient for effusion cooling over a transverse corrugated surface

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耦合文献(47)

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