重力热管流动换热计算研究

ifferent internal and external parameters of gravity heat pipe have important influence on heat transfer performance of heat pipe. Using FLUENT2021R1 software, the numerical simulation of gravity heat pipe was carried out, and the influence of internal and external parameters on the heat transfer performance of the heat pipe was obtained. The results are showed as follow：the total thermal resistance of the heat pipe increases with the increase of the saturation temperature of the working medium inside the heat pipe；the total thermal resistance of the heat pipe decreases with the increase of input thermal power in the evaporation section of the heat pipe； with the decrease of saturation temperature of working medium, the influence of input thermal power on the total thermal resistance of the heat pipe decreases gradually.