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采用数值模拟的方法,对整体涡轮导叶的流动换热特性进行了气热耦合研究,并引入抑涡孔结构进行对比分析。研究结果表明:叶片表面温度分布规律总体上是前缘高于尾缘,叶背高于叶盆。随着冲击距的变小,冲击驻点对流换热系数逐渐增大;新型抑涡气膜孔在真实叶片上有比圆柱孔更高的冷却效率,并且叶盆上使用的冷却效率更高。
The numerical simulation method is used to study the heat and heat transfer characteristics of the turbine guide vane. The results show that the distribution of leaf surface temperature is generally higher than the trailing edge leading edge, leaf back higher than the leaf pots. As the impact distance becomes smaller, the convective heat transfer coefficient of impinging stagnant point increases gradually. The new type of vortex suppression film has higher cooling efficiency on the real blade than the cylindrical hole, and the cooling efficiency on the pot is higher.