径向旋转热管的数值模拟方法  

Numerical simulation method of radial rotating heat pipe

作　　者：李果[1] 许源 张雨辰 张国华[2] 丁水汀 LI Guo;XU Yuan;ZHANG Yuchen;ZHANG Guohua;DING Shuiting(School of Energy and Power Engineering,Beihang University,Beijing 100191,China;Research Institute of Aero-Engine,Beihang University,Beijing 100191,China;Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100191 [2]北京航空航天大学航空发动机研究院,北京100191 [3]中国民航大学,天津300300

出　　处：《航空动力学报》2023年第8期1937-1945,共9页Journal of Aerospace Power

摘　　要：为了推动热管涡轮盘进入实用阶段,对热管内部的流动、相变及传热机理进行了数值模拟研究,采用流体体积(VOF)两相流模型,通过用户自定义函数(UDF)编程将Sun等提出的相变模型应用于重力热管及径向旋转热管,编程实现了相变界面网格捕捉方法以及质量守恒控制方法。重力热管的数值模拟结果与实验吻合较好,温度场的误差小于2%,将该方法推广至径向旋转热管后可观测到,离心力增大会使热管整体温度升高10%以上,内部工质流动加速超过2 m/s。以上结果说明,该方法适用于热管的数值模拟,而旋转离心力会对热管的温度场、流场产生较大影响。该工作为热管涡轮盘的数值模拟奠定了基础。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.

关 键 词：涡轮盘 径向旋转热管 热管模拟 相变传热 两相流动 

分 类 号：V232.3[航空宇航科学与技术—航空宇航推进理论与工程]