封闭空间系统的散热强化仿真研究

发布时间：2018-04-05 00:35

本文选题：封闭系统　切入点：散热　出处：《热科学与技术》2016年04期

【摘要】：结合对流、辐射和传导理论对一个典型的封闭空间系统的热-流场进行了数值仿真研究,提出了三种具体的促散热方案并开展了仿真分析。结果表明:在系统内部,采用强制对流替代自然对流可大幅促进散热;在系统外表面加工微槽,增大与环境的传热面积,可小幅降低中心平台的温度;在封闭空间内填充入氦气有助于系统散热,通过改变空气和氦气的组成比例,可使中心平台处于特定温度。
[Abstract]:Based on the theory of convection, radiation and conduction, the thermal flow field of a typical closed space system is numerically simulated. Three specific schemes for heat dissipation are proposed and simulated.The results show that the forced convection instead of the natural convection can greatly promote heat dissipation in the system, and the temperature of the central platform can be reduced slightly by increasing the heat transfer area with the increase of heat transfer area on the outer surface of the system.Filling helium gas in the closed space can help the system to dissipate heat. By changing the proportion of air and helium gas, the central platform can be placed at a specific temperature.
【作者单位】：中国科学院宁波材料技术与工程研究所;
【基金】：宁波市自然科学基金资助项目(2015A610102;2015A610095)
【分类号】：TK124

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