中文摘要：

本文研究了不同湍流模型对燃气透平静叶、动叶叶顶和机匣传热的预测特性,分析了SSTγ-θ模型在不同湍流强度、湍流尺度和雷诺数下对C3X静叶传热系数的计算精度。结果表明：SSTγ-θ模型对静叶传热系数的预测精度明显优于其它两方程湍流模型;SSTγ-θ模型的计算结果在本文所研究的湍流强度和雷诺数范围内与试验结果能够很好吻合;不同湍流模型计算的叶顶和机匣传热系数分布规律与试验结果相似,SSTγ-θ模型的预测结果在叶顶及机匣的大部分区域与试验结果最为吻合。

英文摘要：

This paper presents an investigation on prediction accuracy of several two-equation turbulence models on gas turbine stator and rotor blade tip and casing heat transfer. The prediction ability of SST V - 0 model on heat transfer at varying tm＇bulence intensities, turbulence integral length scales and Reynolds numbers are also studied. The results indicate that the SST 7 - 0 model has significantly improved the prediction accuracy on stationary cascade surface heat transfer. The numerical results of SST V - 0 model show well agreements with the experimental data at a large range of inflow turbulence intensities and exit Reynolds numbers. The predicted heat transfer coefficients on blade tip and casing by using different turbulence models present similar distribution trends with the experimental data, however, the results of SST V - 0 model show best agreements on blade tip and the most regions of casing surface.