三周期极小曲面通道内流动换热特性实验研究

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中图分类号：TK124 文献标志码：A

DOI： 10.7652/xjtuxb202511012 文章编号：0253-987X（2025）11-0125-08

Abstract： To reveal the flow and heat transfer characteristics in triply periodic minimal surface channels，this study constructs an experimental setup based on the transient single-blow method. The flow and heat transfer performance of air in I-WP and Primitive channels are systematically measured and analyzed，and the effects of cell type， porosity （ε），and Reynolds number （Reh ）on the flow and heat transfer performance are investigated. The results show that the friction factor of the Primitive channel decreases with increasing porosity，and the influence of porosity on flow resistance weakens as Reh increases. When the porosity increases from O.3O to O.4O，the friction factor decreases by approximately 37% at Reh=80 and by 15% at Reh=450 . In contrast，the friction factor of the I-WP channel increases with porosity，while its heat transfer performance exhibits only minor variations due to the limited impact of porosity changes on flow disturbances. Using the ratio of the Colburn heat transfer factor to the friction factor as a comprehensive performance evaluation metric， the Primitive channel shows a slight improvement in overall performance with increasing porosity，whereas the I-WP channel exhibits a significant decline.When ε⩽0 . 35，the I-WP channel outperforms the Primitive channel in comprehensive performance;however，when ε=0.40 ，their performance becomes comparable.

Keywords： triply periodic minimal surface; porosity; friction factor; heat transfer performance

三周期极小曲面（TPMS）是一类在三维空间中周期性分布且任意点处平均曲率为0的曲面，可通过数学函数精确描述和控制[1-2]。（剩余12580字）