Flow and heat transfer characteristics based on Gyroid triply periodic minimal surface heat exchange components

doi:10.16085/j.issn.1000-6613.2024-1901

Abstract

Abstract:

In this study, microchannel heat exchangers were designed using the Gyroid structure, a type of triply periodic minimal surface (TPMS). The heat transfer and fluid flow characteristics of these heat exchangers were analyzed using numerical simulation. The Gyroid structure's mathematical representation and its unique features were discussed in detail. Simulations were conducted on heat exchanger components filled with Gyroid structures of different sizes, and the results were compared and analyzed to develop empirical correlations for heat transfer and fluid flow. To minimize pressure drop, a new design involving anisotropic Gyroid structures was proposed and its effects on heat transfer and fluid flow were investigated. The findings suggested that smaller Gyroid structures enhanced heat transfer but also increased pressure drop. The study identified empirical correlations specifically suited for the Gyroid structure, providing a foundation for designing TPMS-based heat exchangers. In the case of anisotropic Gyroid cells, expanding the size in the direction of fluid flow could improve the overall performance of heat transfer and fluid flow, but it would reduce heat transfer efficiency. Reducing the size perpendicular to the flow hardly affected the overall performance, but it could simultaneously reduce the volume and the pressure drop per unit length, and increase the heat transfer amount per unit volume. It was essential to balance these factors based on the specific design needs.

Key words: triply periodic minimal surface, Gyroid cell, microchannels, numerical simulation, heat exchange components

摘要：

以三周期极小曲面（triply periodic minimal surface，TPMS）Gyroid胞元构造微通道换热器，通过数值模拟方法分析其流动换热特性。对Gyroid胞元的数学描述及结构特征进行了阐述，并对不同尺寸的Gyroid胞元填充的高温换热器换热构件进行了模拟计算，将结果进行对比分析并生成了流动换热经验关联式。为了降低压降，提出各向异性Gyroid胞元结构并研究其对流动换热特性的影响。研究结果表明：胞元尺寸越小，Gyroid的换热特性越好，但压降随之增大；研究确定了适用于G型胞元结构的流动换热经验关联式，为TPMS换热器设计提供了基础；在各向异性胞元中，增大流向尺寸可以提升流动换热综合性能，但会牺牲一部分换热性能；减小展向尺寸几乎不影响综合性能，可以同时减小体积和单位长度压降，并提高单位体积换热量。因此，需要综合考虑设计需求。

关键词: 三周期极小曲面, Gyroid胞元, 微通道, 数值模拟, 换热构件

CLC Number:

WANG Zhaolin, ZHANG Zhigang, ZHOU Jing, GAO Chen, PENG Kechen, JIANG Mindi, XI Xi, XU Shengli, LIU Hong. Flow and heat transfer characteristics based on Gyroid triply periodic minimal surface heat exchange components[J]. Chemical Industry and Engineering Progress, 2025, 44(8): 4454-4462.

王兆霖, 张志刚, 周静, 高琛, 彭克臣, 姜敏迪, 奚溪, 徐胜利, 刘红. Gyroid三周期极小曲面换热构件流动换热特性[J]. 化工进展, 2025, 44(8): 4454-4462.

Figures/Tables 16

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