| Citation: | Wang Haichao, Jia Yushuai, Fang Hongyi, et al. Effect of radiation on the comprehensive cooling efficiency modalization of turbine vane and its correction[J]. Journal of Aerospace Power, 2026, 41（7）：20250211 doi: 10.13224/j.cnki.jasp.20250211
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To accurately evaluate the comprehensive cooling efficiency of turbine vane under high-temperature and high-pressure conditions, numerical simulations were performed to investigate the influence of thermal radiation on the extrapolation accuracy from low operating condition experiments. The results showed that without considering thermal radiation, the deviation between the extrapolated average comprehensive cooling efficiency and the real value was 3.14%. However, when radiation effects were included, the deviation increased significantly to 6.48%, indicating that thermal radiation was a primary factor causing modeling inaccuracy. To address this issue, a correction model in the form of a power function was constructed based on key dimensionless parameters: mainstream Reynolds number ratio, temperature ratio, and pressure ratio. The specific form of the correlation was determined using non-linear regression on multi-condition simulation data. Validation results demonstrated that after applying the proposed correction correlation, the maximum deviation of cooling efficiency between high and low operating conditions was controlled within 1.21%. The proposed method can significantly improve the accuracy of modeling prediction.
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