A novel optimized liquid cooled heat sink integrated with 3D lattice structure under different blockage ratios

IF 6.4 2区工程技术 Q1 MECHANICS International Communications in Heat and Mass Transfer Pub Date : 2025-02-13 DOI:10.1016/j.icheatmasstransfer.2025.108715

Aditya Narkhede , N. Gnanasekaran , Ajay Kumar Yadav

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Abstract

In this numerical work, investigation is focused on thermo-hydraulic nature of a periodic metal foam-integrated heat sink with an octet lattice-structure topology. Heat sink is partially filled with octet structure based periodic metal foam having 2.5 mm unit cell length with blockage ratios of 0.25/0.5/0.75/1, porosity of 0.83/0.87/0.91, and flow velocity of 0.02–0.05 m/s for electronic thermal management. The effect of porosity and blockage ratio on the wall temperature and pressure gradient of the heat sink is examined. Among all configurations, the lowest value of wall temperature of 311.24 K and the highest value of pressure gradient of 5091 Pa/m are observed for the case of blockage ratio 1, porosity 0.83, and flow velocity of 0.05 m/s. Additionally, the thermo-hydraulic performance enhancement owing to the partly packed configuration is observed based on the enhancement ratio and thermo-hydraulic performance parameter (THPP). The highest enhancement ratio is observed for the case with a blockage ratio of 1, porosity of 0.83, and a velocity of 0.02 m/s. The thermal design with a velocity of 0.03 m/s, a blockage ratio of 0.75, and a porosity of 0.83 is considered the optimal design in accordance with the THPP, which has a value of approximately 1.7.

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一种新型的优化液冷散热器集成三维晶格结构在不同堵塞比

在本数值工作中，重点研究了具有八元晶格结构拓扑结构的周期性金属泡沫集成散热器的热水力特性。散热器部分填充基于八元体结构的周期性金属泡沫，其单元长度为2.5 mm，堵塞比为0.25/0.5/0.75/1，孔隙率为0.83/0.87/0.91，流速为0.02-0.05 m/s，用于电子热管理。考察了孔隙率和堵塞率对散热器壁面温度和压力梯度的影响。堵塞比为1、孔隙度为0.83、流速为0.05 m/s时，壁面温度最低为311.24 K，压力梯度最高为5091 Pa/m。此外，基于增强比和热工性能参数（THPP），观察了部分填充结构对热工性能的增强作用。当堵塞比为1、孔隙度为0.83、流速为0.02 m/s时，增强率最高。流速为0.03 m/s、堵塞比为0.75、孔隙度为0.83的热设计是符合THPP值约为1.7的最优设计。

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.