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热管作为导热性能特别高的良好传热元件近年来得到不断重视而越来越多运用于散热器结构中。但关于热管数值分析的方法研究不多,未能有效指导热管散热器结构设计。文章分析了热管导热的基本原理和内部结构,提出了一种适合热管传热数值分析的简化热传导仿真模型,将热管的复杂热特性用简化模型的当量热传导系数来表达,利用所提出的简化热传导仿真模型对一实际散热器进行分析、实验验证了该仿真结果,并讨论了热管导热效能必要条件。
In recent years, the heat pipe, which is a good heat transfer element with particularly high thermal conductivity, has been increasingly used in the heat sink structure. However, few studies on the numerical analysis of heat pipes have been conducted, which failed to effectively guide the structural design of heat pipe radiators. This paper analyzes the basic principle and internal structure of the heat pipe heat conduction, and presents a simplified heat conduction simulation model suitable for numerical analysis of the heat pipe heat transfer. The complex heat characteristics of the heat pipe is expressed by the equivalent heat conduction coefficient of the simplified model. By using the simplified heat conduction The simulation model analyzes an actual heat sink, verifies the simulation results experimentally, and discusses the necessary conditions for the thermal conductivity of the heat pipe.