为了研究气膜孔复合角和孔排布方式对冲击诱导旋流气膜双层壁冷却流动与耦合传热的影响，采用流固耦合的数值计算方法，对不同吹风比下4种气膜孔复合角的综合冷却效率和射流流动结构进行了详细研究，同时研究了两种气膜孔排布方式对旋流双层壁结构流动和传热的影响，揭示了4种气膜孔复合角θ下射流空间旋涡的形成、发展和演化过程，并对比分析了不同吹风比下4种气膜孔复合角对面积平均综合冷却效率和总压损失系数的影响。结果表明：气膜孔排布方式不同时，气膜孔复合角对综合冷却效率的影响相差较大。吹风比为1.0时，单旋流交错排布方式下增大气膜孔复合角可以有效提高射流的展向覆盖范围，从而提高综合冷却效率，θ=30°时的面积平均综合冷却效率比θ=0°时高约14.22%；双旋流交错排布时θ=30°比θ=0°时的面积综合冷却效率提高约4.58%。吹风比增加到2.0时，由于射流穿透主流吹离了冷却壁面，降低了气膜保护效果，使得冷却壁面均匀性变差，并且双旋流交错排布时尤为明显。随着吹风比的增加，两种气膜孔排布方式的总压损失系数均呈指数形式增加。

In order to study the effect of the compound angle and arrangement of film hole on the flow and conjugate heat transfer of doublewall cooling with impingement induced swirling film cooling, the overall cooling effectiveness and jet flow structure of four compound angles of film hole under different blowing ratios were studied in detail by numerical calculation method of fluidsolid coupling. Meantime, the effects of the two arrangements of film hole on the flow and heat transfer of doublewall swirling structure were studied. The formation, development and evolution process of the jet space vortex were revealed for four compound angles of film hole. And the effects of four compound angles of film hole on the area average overall cooling effectiveness and total pressure loss coefficient at different blowing ratios were comparatively analyzed. The results show that the compound angle of film hole has a great difference in the influence of the overall cooling effectiveness when the film holes are arranged in different ways. When the blowing ratio is 1.0, the single swirling staggered arrangement increases the compound angle of film hole, which can effectively increase the spanwise coverage range of the jet and improve the overall cooling effectiveness. The area average overall cooling effectiveness when θ is 30° is about 14.22% higher than that when θ is 0°; and when θ is 30° of double swirling staggered arrangement is about 4.58% higher than that when θ is 0°. When the blowing ratio is increased to 2.0, because the jet penetrates the main flow and blows away from the cooling wall, the film protect effect and the uniformity of the cooling wall become worse, especially under the double swirling staggered arrangement. As the blowing ratio increases, the total pressure loss coefficients of two film hole arrangements increase exponentially.

TK221

国家自然科学基金（52071107）；中国博士后科学基金（2019M661254，2021T140147）