关键词: 水热管, VOF模型, 温度分布, 数值模拟

Abstract: The temperature field and the velocity field of the water heat pipe are numerically simulated in order to analyze the temperature uniformity in the thermometer well. The mathematical models of three coupled heat transfer areas, which include the pipe wall, the wick, the liquid water in the cavity and the vapor, are established. By using VOF model, the heat and mass transfer process of fluid flow and heat transfer in the water heat pipe were simulated to obtain the temperature distribution and velocity distribution under steady state. The effects of the heating temperature, the length of the heating section, and the filling volume on the temperature field in the water heat pipe are analyzed. Moreover, the comparison result indicates that there is a good agreement between the numerical simulation results and the experimental results. The results of this paper can provide theoretical basis and guidance for water heat pipe design, operation and improvement.

Key words: water heat pipe, VOF model, temperature distribution, numerical simulation