为了研究旋流进气条件下姊妹孔副孔的排列方式和冲击孔角度在不同吹风比下对旋流气膜冷却效果的影响规律，采用旋流冷气腔，按上述两因素建立7个模型，并在6个吹风比下对各模型采用传质传热类比方式进行数值模拟计算。研究结果表明：在吹风比较小时，各模型冷气射流的贴壁性都较好，且各模型的冷却效率相差不大，但是随着吹风比的增大，各模型的冷却效率都有所下降；采用30°冲击孔针对姊妹孔副孔排列方式，两副孔轴线与主孔轴线距离L1，L2均为0.75D的模型1在6个不同的吹风比下都能取到最高的面平均冷却效率；冲击孔角度对气膜冷却效果的影响在不同吹风比下存在较大差异，在吹风比M为0.3～1.0时采用30°与50°的冲击孔都能得到较好的冷却效果，但当吹风比增大到1.25～1.5时，采用30°冲击孔能获得更好的冷却效果。

To explore the influence rule of the arrangement mode of secondary holes of sister holes and the angles of impingement holes on the swirling air film cooling effect at different blowing ratios under the swirling air inlet condition,seven groups of models are built according to the above two factors,and by using the mass and heat transfer analogy method,the swirl cooling chamber is used to numerically simulate and calculate each model at six blowing ratios.The result results show that when the blowing ratio is low,the adherent property of cooling air jet is good in all models,the cooling efficiency of each model is similar,but with the increase of blowing ratio,the cooling efficiency of each model decreases.Using the impact hole of 30°,aiming at the arrangement mode of secondary holes of sister holes,the distances L1 and L2 between the axes of the two secondary holes and the axis of the main hole are both 0.75D,the model I can get the highest average surface cooling efficiency at six different blowing ratios;the influences of the impingement hole angle on the film cooling effect are quite different at different blowing ratios,when the blowing ratio M is between 0.3 and 1.0,the model with the impingement holes of 30° and 50° can get better cooling effect; but when the blowing ratio is increased by 1.25 to 1.5,the model with the impingement hole of 30° can obtain better cooling effect.

TK124

国家自然科学基金（51809065，52071107）；国家科技重大专项（2017-Ⅰ-0011-0012）