Experimental investigation of the turbine blade local heat transfer characteristics at the inner side of the mid-chord region near film holes was conducted, with and without impingement cooling.
对叶片弦中区内部有、无冲击射流的气膜出流冷却方式中，冷气侧气膜孔局部换热特性进行了实验研究。
The influences of re based on the blade chord length and coolant-gas flux ratio are tested, and comparison is made between the effect of the converging-expanding hole rows and cylindrical hole rows.
研究了基于叶片弦长的主流雷诺数和二次流-主流流量比对冷却效率的影响，并与叶片上圆柱形孔排的气膜冷却效率分布进行了对比。
Wide-chord hollow fan blade is the trend of future development.
宽弦空心风扇叶片是未来风扇叶片的发展趋势。
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