Numerical simulation method of radial rotating heat pipe

In order to promote the heat pipe turbine disk into the practical stage， the flow， phase change and heat transfer mechanism inside the heat pipe were numerically simulated. The volume of fluid (VOF) two-phase flow model was adopted，and the phase change model proposed by Sun et al was applied to gravity heat pipe and radially rotating heat pipe for the first time through user-defined function (UDF) programming. The phase change interface grid capture method and mass conservation control method were realized by programming. The numerical simulation results of the gravity heat pipe were in good agreement with experiment，and the error of temperature field was less than 2%. After this the method was extended to the radially rotating heat pipe. It can be observed that the increase of centrifugal force increased the overall temperature of the heat pipe more than 10% and accelerated the flow velocity of the internal working fluid more than 2 m/s. The above results show that this method is suitable for the numerical simulation of heat pipe， and the rotating centrifugal force will have a greater impact on the temperature field and flow field of the heat pipe. This work has laid a foundation for the numerical simulation of the heat pipe turbine disk. © 2023 BUAA Press. All rights reserved.