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基于构形理论,以导热和对流换热总(火积)耗散率最小为优化目标,对T-Y形肋片进行构形优化,得到同时考虑导热和对流换热(火积)耗散性能的T-Y形肋片最优构形。结果表明:存在最佳单元级直肋和中部空腔高度和长度比使得T-Y形肋片无量纲当量热阻取得二次最小值。增大肋片高度和长度比和肋片占比有助于提高T-Y形肋片整体传热性能。T-Y形肋片与T形肋片相比,T-Y形肋片二次最小无量纲当量热阻降低32.33%,此时T-Y形肋片温度梯度场更均匀,整体传热性能得到明显提高。
Based on the configuration theory, the optimization of the heat flux and heat transfer convection heat (total heat) dissipation is optimized, and the shape optimization of the TY fins is obtained. Considering the dissipative properties of heat transfer and convection heat transfer TY-shaped fin optimal configuration. The results show that the optimal unit-level straight ribs and the central cavity height-length ratio make the quadratic minimum of the dimensionless equivalent thermal resistance of the T-Y-shaped fin. Increasing the height and length ratio of the fins and the proportion of the fins helps to improve the overall heat transfer performance of the T-Y shaped fins. Compared with T-shaped fins, T-Y shaped fins reduced the secondary minimum dimensionless equivalent thermal resistance by 32.33%. At this time, the temperature gradient of T-Y shaped fins was more uniform and the overall heat transfer performance was significantly improved.