Numerical Optimization of the Shaped Film Cooling Hole
The film cooling process of three different hole shapes like cylindrical hole,tapered hole and cat-ear shaped hole in f1at plate were simulated and ca1culated using Realizable k-ε model, based on Finite Volume Method.The cooling effect and protected wal1 area of different film cooling holes were analyzed separately.The impact of the anti-vortex structure of shaped hole to jet-to-plate effect and cooling efficiency were discussed.The results show that the lateral width and overall protection area of the cat-ear shaped hole are larger than the cylindrical hole and tapered hole at the same blowing ratio.Compared with the simple cylindrical hole,the produced anti-vortex structures in tapered hole and cat-ear shaped hole inhibit the formation of rotating vortex pair to some extent,enhancing the jet-to-plate effect and improving the overall film cooling efficiency.The results provide reference data and empirical laws for the advanced film cooling structure optimization of high perfoffi1ance aircraft gas turbine hot components.
film cooling shaped hole numerical simulation optimal design cooling efficiency
Guo Chunhai Zhang Wenwu Huang Yihui
Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences,Ningbo315201,Zhejiang,China
国际会议
第十七届国际制造会议(The 17th International Manufacturing Conference in China)(IMCC 2017))
深圳
英文
1-7
2017-11-23（万方平台首次上网日期，不代表论文的发表时间）