CPU散热器的优化设计及数值模拟  

Optimize Design and Numerical Simulation of CPU Heat Sink

作　　者：王文豪[1] 潘政宏 蒋润花[1] 尹辉斌[1] 黄成龙[2] 

机构地区：[1]东莞理工学院化学工程与能源技术学院,广东东莞523808 [2]中山大学工学院,广东广州510006

出　　处：《电子测试》2017年第8期39-39,47,共2页Electronic Test

基　　金：国家自然科学基金(51506031);广东省自然科学基金(2015A030313653);广东省普通高校特色创新项目(2016KTSCX138)

摘　　要：散热器的散热性能对维持中央处理器(CPU)的运行速率和使用寿命具有重要影响。通过对CPU散热器进行热设计,优化散热器的结构,采用热阻分析法建立CPU散热器的数学模型,利用CFD数值模拟方法研究不同肋片长度的CPU散热器的散热性能,并对肋长为21mm的CPU散热器进行案例分析。研究结果表明:实验范围内,加长散热器肋片长度到27mm可有效降低传热热阻,提高散热性能;超过该长度,肋片长度的增加对散热性能的影响不大。The cooling performance of the radiator has an important effect on the operating rate and the life of Central Processing Unit （CPU）. The structure of the CPU radiator was optimized by the thermal design and the mathematical model of the CPU radiator was established by thermal resistance analysis. The cooling performance of CPU radiator with different length of the fins was studied by using CFD numerical simulation method and the case of the CPU radiator with the length of 21mm was analyzed. The results show that the heat resistance of the radiators decreases and the cooling performance improve as the length of the fins increases to 27mm in the experiment range. Over this length, the increase of the length of the fins has little effect on the cooling performance.

关 键 词：CPU散热器 优化设计 热阻 肋片长度 温度场 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]