河北工业科技2026，Vol.43Issue(3)：280-288,9.DOI:10.7535/hbgykj.2026yx03010
面向数据中心散热的方形微针肋散热器结构优化
Structural optimization of square micro-pin-fin heat sinks for data center heat dissipation
摘要
Abstract
To address the coupled optimization problem of flow resistance and heat dissipation performance of micro-pin-fin heat sinks used in high heat-flux servers of data centers,a three-dimensional thermal-fluid-solid coupled numerical simulation was conducted to systematically investigate the influence mechanisms of the pin-fin height(Hfin),side length(Dfin),and longitudinal spacing(St)of the square micro-pin-fin heat sink on the overall heat transfer and flow resistance performance.A computational model was established using periodic symmetric boundaries,and multi-physics coupled numerical calculations were performed based on Ansys Fluent.By analyzing the flow and temperature fields at typical characteristic cross-sections,the regulation laws of geometric parameters on the flow structure and heat transfer characteristics were revealed.Finally,with the channel pressure drop(△P)and Nusselt number(Nu)as the optimization indicators,a multi-objective collaborative optimization of the heat sink structure was accomplished.The results show that under Re=600 conditions,when Hfin within[1.00,1.50]mm,the effective heat transfer area between the pin-fins and the fluid is insufficient,resulting in a significant degradation of the convective heat transfer capacity of the heat sink.When Hfin within[1.50,2.00]mm,the flow resistance of the heat transfer medium increases sharply due to a substantial reduction in the effective flow area of the flow channel in the pin-fin array region,this leads to a significant reduction in the overall thermal performance of the radiator.The flow resistance of the heat transfer medium in the square micro-pin-fin heat sink rises with the increase of Hfin,Dfin and the decrease of St.Considering the comprehensive performance indicators of flow resistance and heat transfer,the optimal parameter combination for the square micro-pin-fin heat sink is Hfin=1.50 mm,Dfin=0.20 mm,and St=1.00 mm.The research results can provide theoretical basis and data support for the refined design and performance optimization of micro-pin-fin heat sinks in high-heat-flux scenarios.关键词
工程传热、传质学/数据中心/方形微针肋散热器/流动阻力/散热性能/结构优化Key words
engineering heat and mass transfer/data center/square micro-pin-fin heat sink/flow resistance/heat dissipation performance/structural optimization分类
能源科技引用本文复制引用
陈泽瑞,吴欣,胡厚鹏,杨尚,肖健..面向数据中心散热的方形微针肋散热器结构优化[J].河北工业科技,2026,43(3):280-288,9.基金项目
中国南方电网有限责任公司重点研发项目(GZKJXM20240009) （GZKJXM20240009）
