基于柔性热管的笔记本电脑散热过程数值模拟研究  

Numerical simulation of heat dissipation process based on flexible heat pipe for laptop

作　　者：沈迪 李勋锋[2,3,4] 周敬之 淮秀兰 马强[5] SHEN Di;LI Xunfeng;ZHOU Jingzhi;HUAI Xiulan;MA Qiang(Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang 212013,Jiangsu,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;School of Engineering Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Nanjing Institute of Future Energy System,Nanjing 211135,China;Institute for Energy Research,Jiangsu University,Zhenjiang 212013,Jiangsu,China)

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏省镇江市212013 [2]中国科学院工程热物理研究所,北京市100190 [3]中国科学院大学工程科学学院,北京市100049 [4]中科南京未来能源系统研究院,南京市211135 [5]江苏大学能源研究院,江苏省镇江市212013

出　　处：《农业装备与车辆工程》2023年第12期55-59,共5页Agricultural Equipment & Vehicle Engineering

基　　金：国家自然科学基金(52006218)。

摘　　要：可折叠笔记本电脑,采用柔性热管将CPU热量传导至显示屏背板,通过自然对流将热量带走,实现笔记本电脑CPU的温度控制。针对这一结构,采用Fluent软件建立笔记本电脑热管散热结构对应的物理模型,在自然对流条件下,改变柔性热管的弯折角度,研究不同弯折角度对散热性能的影响,分析不同条件下的温度变化曲线。设计显示屏背板作为模型主要散热结构。结果表明,在柔性热管恒定导热系数和随角度变化导热系数条件下,模型散热能力均随热管弯折角度减小而增大,同时,考虑了增加辐射后对模型散热能力的影响大小,考虑辐射后,总体散热趋势无较大变化。In order to control the temperature of CPU in laptop,a flexible heat pipe was used to transfer CPU heat to the back of the display panel,and the heat was taken away by natural convection.The related physical models of laptop using heat pipe for heat dissipation were established with the software Fluent,heat dissipation by changing the bending angle of the flexible heat pipe under natural convection was studied,and temperature change curves of model monitoring part were analyzed.The back plate of the display screen was designed as the main heat dissipation structure of the model.The results showed that heat dissipation capacity of model increased with bending angle decreases under the same or angle-dependent thermal conductivity of flexible heat pipe.Meaningwhile,the influence of radiation on the heat dissipation capacity of the model was studied.After considering radiation,there was no significant change in the overall heat dissipation trend.

关 键 词：柔性热管 笔记本电脑散热 自然对流 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]