In the present study, a numerical investigation was conducted to enhance the film cooling efficiency by using anti-vortex designs. Four configurations are considered in this paper, which are the configuration with the streamwise cylindrical injection, the case with an upstream Barchan dune shape ramp (BDSR), the case with sister holes and the configuration that combine the Barchan dune shape with sister holes. The effects of a blowing ration (M = 0.5, 0.85, 1.0 and 1.5) on the film cooling effectiveness are considered. The validation shows good agreement and almost all flow structures are well reproduced by the RANS computation. Results show that the Barchan dune shapes with sister holes have an influence on thermal and flow structures, this configuration substantially augments the film cooling efficiency.

在本研究中，进行了数值研究，以通过使用抗涡流设计来提高薄膜的冷却效率。本文考虑了四种配置，分别是沿流向圆柱形注入的配置，具有上游Barchan沙丘形坡道（BDSR）的壳体，具有姐妹孔的壳体以及将Barchan沙丘形状与姐妹孔相结合的结构。考虑了吹塑比（M = 0.5、0.85、1.0和1.5）对薄膜冷却效率的影响。验证显示出良好的一致性，并且几乎所有流结构都可以通过RANS计算得到很好的再现。结果表明，带有姐妹孔的Barchan沙丘形状会对热和流动结构产生影响，这种配置大大提高了薄膜的冷却效率。