为了改善燃气透平叶片冲击-凸起扰流结构流动与换热特性，构建了3种复合冷却叶片：无凸起结构V1，分别在前缘与冲击孔错列布置两种泪滴型扰流柱V2和V3，采用SST komega湍流模型，在8种不同质量流量比（MFR）工况下分析3种叶片的流动与换热特性。结果表明：针对C3X叶型布置的泪滴型扰流柱能有效改善叶片的换热特性；低MFR工况下，V3结构性能更优，冷却效率可提高9.29%；增加MFR可以同时改善流动与换热特性，当MFR从0.25%增加到1.00%时，3种叶片的压力损失系数先增大后减小；随着MFR从0.25%增加到2.00%，V2和V3结构冷却效率的提高率逐渐降低；在MFR≥1.00%时，V3结构的流动与换热特性均优于V2。

Three composite cooling vanes were built primarily to improve the flow and heat transfer properties of gas turbine vane with impingementprotrusion cooling configuration.No protrusion was arranged in V1.Two kinds of teardrop protrusions V2 and V3 were respectively arranged at the leading edge,which were in stagger arrangement with impingement holes.The SST komega turbulent model was adopted to analyze the flow and heat transfer characteristics of three composite cooling vanes at eight mass flow ratios(MFR). The results show that teardrop protrusions arranged in C3X vane profile can enhance the heat transfer properties of the vane effectively. The structrual performance of V3 performs better with cooling effectiveness improvement of 9.29% at low MFR. Raising MFR can improve the flow and heat transfer properties because pressure loss coefficients of three vanes first increase and then decrease with MFR ranging from 0.25% to 1.00%.The increasing rate of cooling effectiveness of V2 and V3 decreases gradually with MFR ranging from 0.25% to 2.00%.When MFR is not less than 1.00%,the flow and heat transfer properties of V3 are better than those of V2.

TK471

国家自然科学基金（51376140,51776142）