In order to experimentally study the cooling characteristics of different compound cooling configurations in reverse flow combustor, three kinds of compound cooling configurations are designed. The research results from the experimental study for the test pieces show that: (1) There is an obvious effect of the blowing ratio on the cooling effectiveness, the bigger the blowing ratio, the better the cooling effectiveness. (2) Different cooling configurations show different cooling characteristics in the different section of reverse flow combustor. (3) For the reverse flow combustor, the cooling effectiveness of impingement +reversed convection + film cooling configuration and impingement + cocurrent convection + film cooling configuration have a great change. However, the cooling effectiveness change of impingement +effusion configuration is smooth, which means the temperature of reverse flow combustor is more even than that of the other cooling configurations.%为了研究回流燃烧室火焰筒壁面不同冷却结构形式的冷却特点,设计了3种冷却结构形式,采用试验方式分别对其冷却效果进行了试验研究,得出了如下结论:在相同的壁面开孔率下,(1)吹风比对冷却效率影响显著,随着吹风比的增大冷却效率升高；(2)在火焰筒的不同区段,不同的冷却结构表现出不同的特点；(3)沿整个火焰筒壁面,冲击+逆(同)向对流+气膜冷却结构的冷却效率变化剧烈,而冲击+发散冷却结构的冷却效率沿火焰筒壁面变化较为平缓,火焰筒壁面温度沿流向分布均匀,温度梯度小.这说明对于回流燃烧室,当壁面采用复合冷却结构时,采用全冲击发散冷却结构较为适宜.
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