多孔晶格结构对射流冲击散热性能的影响

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2025-06-09 DOI:10.1016/j.ijthermalsci.2025.110071

Miao Qian , Shaoyu Huang , Zhong Xiang , Le Liu , Yatong Yu , Jianxin Zhang

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引用次数: 0

摘要

多孔晶格结构具有较大的比表面积，可以提高传热性能。本文研究了四种晶格多孔结构：体心立方（BCC）、金刚石（Diamond）、面心立方（FCC）和三周期最小表面（TPMS）在射流冲击条件下的热特性。通过计算流体动力学（CFD）模拟和实验验证，分析了结构参数（包括晶胞尺寸和孔隙率）对传热性能和压降的影响。结果表明，金刚石晶格结构具有优异的散热性能，最佳孔隙率为0.83，晶胞尺寸为2 mm。四种结构中，金刚石结构不仅具有最高的努塞尔数（可达1626），而且具有最低的压降（12 Pa）。综合评价因素也证实了金刚石结构是传热应用的最佳选择。此外，在实验平台上验证了数值模拟结果，验证了计算模型的准确性。本研究的结果可能有助于设计和优化晶格多孔结构，以增强大功率电子器件的传热。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The effect of porous lattice structures on jet impingement heat dissipation performance

Porous lattice structures can enhance heat transfer performance due to their large specific surface area. In this study we investigate the thermal characteristics of four lattice porous structures under jet impingement conditions: Body-Centered Cubic (BCC), Diamond, Face-Centered Cubic (FCC), and Three-Periodic Minimal Surface (TPMS). Through computational fluid dynamics (CFD) simulations and experimental validations, we analyze the effects of structural parameters, including unit cell size and porosity, on the heat transfer performance and pressure drop. The results demonstrate that the Diamond lattice structure exhibits superior heat dissipation performance, with an optimal porosity of 0.83 and unit cell size of 2 mm. The Diamond structure not only exhibits the highest Nusselt number (up to 1626) but also the lowest pressure drop (12 Pa) among the four configurations. The comprehensive evaluation factor also confirms that the Diamond structure is the optimal choice for heat transfer applications. Additionally, we validate the numerical simulation results with an experimental platform, demonstrating the accuracy of the computational model. The findings of this study may aid design and optimization of lattice porous structures for enhancing heat transfer in high-power electronic devices.

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.