This work focuses on the experimental study of the heat transfer and film cooling characteristics of a fully cooled vane under high subsonic conditions; the transient heat transfer measurements with thermocouples were employed. The inlet Reynolds numbers of the cascade ranged from $3.0\times {10}^5$ to $9.0\times {10}^5$ and the exit Mach number was 0.8. Two freestream turbulence intensities (1.3% and 14.7%) and three mass flow ratios (5.5%, 8.4%, and 12.5%) were tested. The averaged film cooling effectiveness of the current vane with shaped holes was found to be increased by 15%–43% more than that of the vane only with cylindrical holes, and elevated turbulence intensity reduced the averaged film cooling effectiveness by 3%–26%. The heat transfer augmentation of the current vane was lower than that of the vane only with cylindrical holes. With the mass flow ratio increasing, the heat transfer augmentation gradually increased on the pressure side, whereas it was nearly kept invariable on the suction side. The net heat flux reduction results showed that the vane with shaped holes significantly improved the cooling performance, whereas elevated turbulence intensity significantly deteriorated the cooling performance.

这项工作的重点是在高亚音速条件下对完全冷却的叶片的传热和薄膜冷却特性进行实验研究。使用热电偶进行瞬态传热测量。级联的入口雷诺数范围为$3.0\times {10}^5$ 至 $9.0\times {10}^5$出口马赫数为0.8。测试了两个自由流湍流强度（1.3％和14.7％）和三个质量流率（5.5％，8.4％和12.5％）。发现目前带有异形孔的叶片的平均薄膜冷却效率比仅具有圆柱形孔的叶片的平均冷却效率提高了15％–43％，湍流强度的提高使平均薄膜的冷却效率降低了3％–26％ 。当前叶片的传热增强低于仅具有圆柱形孔的叶片的传热增强。随着质量流量比的增加，传热增加在压力侧逐渐增加，而在吸力侧几乎保持不变。净热通量降低结果表明，带有异形孔的叶片显着提高了冷却性能，