前疏后密叉排微细通道热沉特性研究  

Research on Fluid Flow and Heat Transfer of Staggered Fin Mini-channel Heat Sinks With Frontal Sparser and Rear Denser Arrangement

作　　者：潘瑶[1] 李林[1] 陈彬彬[1] 杨瑞琦[1] 杨金国[1] 刘伟[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《工程热物理学报》2013年第4期733-737,共5页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划资助项目(No.2013CB228302);国家自然科学基金资助项目(No.51036003);教育部博士点基金(No.20100142110037)

摘　　要：本文通过肋片前疏后密的排布方式改进叉排微细通道热沉的性能,对前疏后密叉排微细通道热沉的传热和流动特性进行了数值模拟和实验研究。研究表明,前疏后密的肋片排布方式能增强换热效果,相比普通叉排排布方式换热能力提高约50%。流量400mL/min,热负荷240 W(30W/cm^2)时,热源表面温度约为57.7℃。Frontal sparser and rear denser arrangement was proposed in mini-channel heat sinks for performance improvement. Fluid flow and heat transfer processes in staggered fin mini-channel heat sinks with frontal sparser and rear denser arrangement were analyzed with numerical simulation and experiment. The result shows that frontal sparser and rear denser arrangement can improve heat transfer performance. Compared with uniform staggered fin heat sinks, these proposed heat sinks have a 60 percent improvement of heat transfer coefficient. The temperature of heat source was about 57.7℃ when the volume flow rate was 400 mL/min and thermal load stayed 240 W （30 W/cm2）.

关 键 词：前疏后密 叉排 微细通道 

分 类 号：TK124[动力工程及工程热物理—工程热物理]