| Citation: | YAN Biao, ZHU Hua, LIU Yusong, et al. Effects of finned structure on flow and heat transfer characteristics in vortex cooling of turbine blade[J]. Journal of Aerospace Power, 2023, 38（11）：2729-2737 doi: 10.13224/j.cnki.jasp.20220024
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In order to investigate the influence of the flow and heat transfer characteristics on vortex cooling with different finned structures in the intake cavity and vortex cooling chamber, six different models with finned structure were built. The flow characteristics, the heat transfer characteristics, and the comprehensive heat transfer performance of these six models were compared and analyzed under the same boundary conditions. The results showed that the heat transfer intensity of the target in the intake cavity increased obviously when finned structure was added to the intake cavity. When finned structure was added to the vortex chamber target surface, the heat transfer intensity and comprehensive heat transfer factor of the target in the vortex cooling chamber were enhanced a lot, too. Among these six models, the model with 45° oblique fins on the intake cavity and 90° fins on the vortex cooling chamber had the highest total heat transfer and comprehensive heat transfer factor, the total heat transfer of the two targets was 51.8% higher than that of the non-finned model, the comprehensive heat transfer factor was 3.44% higher than that of the non-finned model.
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