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实验研究了涡轮叶片尾缘带纵向隔板内冷通道的流动与换热特性.采用相变加热的方法为实验提供了等壁温边界条件,模型实验件采用了扰流柱和微小通道结构,并且分别与直隔板和波形隔板进行组合实验,以期望得到综合换热效果最优的组合.为了获得通道的局部换热信息,实验件的一侧外壁面被细分成了10个集水区域分别进行研究.结果表明:当Re在10 000~60 000之间时,综合换热效果最差的是直隔板加光通道的组合结构,综合换热效果最佳的是波形隔板加微小通道的组合结构.
Experimental study of the flow and heat transfer characteristics of the internal cooling channel in the longitudinal partition of turbine blade trailing edge zone provided the isothermal wall boundary conditions for the experiment by the phase change heating method. The experimental model adopted the structure of the spoiler and the micro-channel, In addition, the combination experiments with the straight bulkhead and the corrugated bulkhead were carried out in order to get the optimal combination of heat exchangers.In order to obtain the local heat transfer information of the channel, the outer wall of the experimental part was subdivided into 10 sets Water area respectively.The results show that when Re is between 10 000 and 60 000, the worst combination of heat transfer is the combined structure of the straight partition and the light passage, and the best combination of the heat exchangers is the corrugated partition Plus the combination of micro-channel structure.