To investigate the application of ribbed cross-flow coolant channels with film hole effusion and the effects of the internal cooling configuration on film cooling, experimental and numerical studies are conducted on the effect of the relative position of the film holes and different orientation ribs on the film cooling performance. Three cases of the relative position of the film holes and different orientation ribs (post-rib, centered, and pre-rib) in two ribbed cross-flow channels (135° and 45° orientation ribs) are investigated. The film cooling performances are measured under three blowing ratios by the transient liquid crystal measurement technique. A RANS simulation with the realizable k-ε turbulence model and enhanced wall treatment is performed. The results show that the cooling effectiveness and the downstream heat transfer coefficient for the 135° rib are basically the same in the three position cases, and the differences between the local effectiveness average values for the three are no more than 0.04. The differences between the heat transfer coefficients are no more than 0.1. The “pre-rib” and “centered” cases are studied for the 45° rib, and the position of the structures has little effect on the film cooling performance. As the film hole moves backward relative to the rib position (from the pre-rib to the post-rib), the swirling flow formed in the hole has a slight difference, and the discharge coefficient of the film hole increases slightly at lower blowing ratio while decreases slightly at higher blowing ratio. In the different position cases, the outlet velocity distribution of the film holes, the jet pattern and the discharge coefficient are consistent with the variation in the cross flow.

为了研究带肋孔的肋状错流冷却剂通道的应用以及内部冷却结构对膜冷却的影响，对膜孔的相对位置和不同方向的肋条对膜孔的影响进行了实验和数值研究。薄膜冷却性能。研究了三种情况下薄膜孔和两个肋状横流通道（135°和45°定向肋）中不同定向肋（肋后，居中和肋前）的相对位置。通过瞬态液晶测量技术在三种吹塑比下测量膜的冷却性能。用可实现的k-ε湍流模型和增强的壁面处理进行了RANS仿真。结果表明，在三个位置情况下，135°肋的冷却效率和下游传热系数基本相同，三个位置的局部效率平均值之差不超过0.04。传热系数之差不超过0.1。研究了45°肋的“前肋”和“居中”情况，结构的位置对薄膜的冷却性能影响很小。当薄膜孔相对于肋骨位置向后移动（从前肋到后肋）时，在孔中形成的旋流略有不同，并且在较低的吹塑比下薄膜孔的排放系数略有增加而在较高的吹风比下略有下降。在不同的情况下，