随着航空发动机推重比要求的不断提高,发动机热端部件热负荷急剧上升,尤其是燃烧室火焰筒需要有效的热防护。因此对先进冷却技术的研究需要不断进行,层板冷却是一种较为先进的冷却技术,国外的层板冷却技术已经进入实际应用阶段。Favaretto等人通过数值模拟和传热优化分析研究了层板结构不同的冲击孔、气膜孔、扰流柱直径和不同扰流柱高度的影响。Funazaki通过数值模拟及实验研究了放大层板冷却结构的内部对流换热系数。研究发现数值模型计算结果与实验值符合较好。另外,平均对流换热系数 As the aero-engine thrust-to-weight ratio continues to increase, the thermal load on the hot end components of the engine rises dramatically, especially in the combustion chamber flame tube. Therefore, the research on advanced cooling technology needs to be carried out continuously. The cooling of the laminated board is a kind of advanced cooling technology. The overseas cooling technology of the laminated board has entered the practical application stage. Favaretto et al. Studied the influence of different impact holes, film holes, spoiler diameter and different spoiler height by numerical simulation and heat transfer optimization analysis. Funazaki studied the internal convective heat transfer coefficient of the cooled laminar laminate by numerical simulation and experiments. The results show that the numerical model is in good agreement with the experimental data. In addition, the average convection heat transfer coefficient