地面结构热试验自然对流换热数值研究  

Numerical Research on the natural convection heat transfer of thermal test under ground conditions

作　　者：王伟[1] 何振威[1] 黄敏[1] 胡由宏[1] 王智勇[1] 刘永清[1] 

机构地区：[1]北京强度环境研究所,北京100076

出　　处：《强度与环境》2016年第6期38-43,共6页Structure & Environment Engineering

摘　　要：基于ANSYS CFX,发展了一种自然对流换热数值仿真计算方法。应用该方法对地面热试验中的自然对流换热进行了数值研1究。分别给出了大空间自然对流、平板型热试验真实工况下的换热热流密度大小,并将其与大空间自然对流工程经验公式计算结果、地面试验结果进行对比。结果表明,数值仿真结果具有一定的合理性和准确性,可作为地面热试验自然对流损失项补偿的依据,从而提高地面热试验的准确度和有效性。In order to investigate the natural convection heat transfer in themal test under ground conditions, a numerial method was developed based on ANSYS CFX. With this method, the heat flux of hot wall in infinite space as well as in the real case of plat thermal test was received, which was proved to be correct after contrast with the result of engineering formula and test result. By applying the achievement, the validity and precision of thermal test under ground conditions can be increased.

关 键 词：热试验 自然对流换热 数值研究 ANSYS CFX 

分 类 号：V416.4[航空宇航科学与技术—航空宇航推进理论与工程]