具有周期性薄膜热源的多层介质非稳态传热数值仿真

为分析具有薄膜热源的多层介质非稳态传热问题,以某型飞机层合电加温风挡为例,构建了一种热流密度-温度边界条件,实现了薄膜热源热流和温度属性向多层介质内外两个方向上的实时传递,再现了薄膜热源温度对临近多层介质表面温度的影响,为具有薄膜热源的多层介质传热问题分析和加温控制规律设计提供了一种可行方法.

Simulation of unsteady heat transfer problem of a multilayer structure with a cyclic thin film heat source

A new boundary condition named HEAT FLUX-TEMPERATURE boundary condition was proposed to solve the heat transfer problem driven by a thin film heat source embodied in a multilayer structure.With this boundary condition,heat flux of the thin film heat source transferred to the inner and outer surface of the multilayer structure could be set in real time,based on the temperature of the thin film heat source.Then,simulation was set with an electro-thermal windshield which had a thin film heat source embodied in a multilayer structure, and the change of temperature of the thin film heat source and outer surface with the time were delivered.