One important method for enhancing the performance of modern engines is to increase the turbine inlet temperature. Due to the high velocity near the throat, the heat transfer to the blade trailing edge is high, particularly on the pressure side near the trailing edge. Therefore, the design methodology for cooling structures becomes critical for the thinner trailing edge compared to other parts of the blade. Trailing-edge cutback is a common cooling structure that guides cold air to form an effective film near the blade pressure side. However, the cutback lip induces strong and unsteady shedding vortexes, which significantly reduce the downstream coolant effectiveness.

中文翻译：

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不同后缘缩减几何形状冷却特性的实验研究

提高现代发动机性能的重要方法之一是提高涡轮入口温度。由于喉部附近的速度较高，因此到叶片后缘的传热较高，特别是在后缘附近的压力侧。因此，对于比叶片其他部分更薄的后缘，冷却结构的设计方法变得至关重要。后缘缩进是一种常见的冷却结构，可引导冷空气在叶片压力侧附近形成有效的薄膜。然而，缩减唇缘会产生强烈且不稳定的脱落涡流，从而显着降低下游冷却剂的效率。