自然对流条件下椭圆柱发热器件的构形设计

Constructal design of elliptical cylinder heat generation components under natural convection

在自然对流条件下,基于构形理论和理论,建立了导热基座上椭圆柱离散热源的散热模型,分别在给定热源热导率总和与热源总发热强度的约束条件下,以热导率分布与热源强度分布为设计变量,以系统最高温度和基于耗散的当量热阻为性能指标,进行构形设计,得到了对应的热源散热最优构形,可为实际发热器件的热设计和热管理提供理论支撑。

Under the condition of natural convection,the heat dissipation model of elliptical cylinder discrete heat sources on a heat conduction base is established by using constructal theory and entransy theory.With the fixed sum of the thermal conductivity and the fixed total heat generating intensity of heat sources,the constructal design is conducted by taking the thermal conductivity distribution and heat source intensity distribution as design variables,and the maximum temperature of system and the entransy equivalent thermal resistance as the performance indicators.The corresponding optimal constructal design for the heat dissipation of heat sources are obtained,which can provide theoretical guidelines for the thermal design and thermal management of practical heat generating devices.