多层打孔隔热材料热分析计算模型研究  

Thermal analysis model for multilayer perforated insulation material

作　　者：刘振宇[1] 卫飞[1] 房光强 吴慧英[1] LIU Zhen-yu;WEI Fei;FANG Guang-qiang;WU Hui-ying(School of Mechanical Engineering,Shanghai J iao Tong University,Shanghai 200240;State Key Laboratory of Metal Natrix Composites,Shanghai Jiao Tong University,Shanghai 200240;Aerospace System Engineering Shanghai,Shanghai 201108)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]上海交通大学金属基复合材料国家重点实验室,上海200240 [3]上海宇航系统工程研究所,上海201108

出　　处：《热科学与技术》2018年第5期353-358,共6页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51536005,51676124,51573094)

摘　　要：基于能量守恒定律,构建可应用于空间机构热防护的多层打孔隔热材料热性能分析计算模型,该模型考虑相邻两层反射屏间辐射换热、反射屏与间隔物接触导热、间隔物本身导热以及残余气体导热,能够准确预测多层打孔隔热材料内部传热特性。并在此基础上,进行了隔热材料热真空实验研究,以验证所建热分析计算模型的准确度。A thermal analysis model for multilayer perforated insulation material based on the energy conservation law was developed to predict its thermal protection characteristic. In the thermal analysis model the radiation heat transfer between the two adjacent reflective screens, the conduction between the reflective screen and spacer, and the conduction of residual gas are considered, which can accurately describe the heat transfer process inside the multilayer perforated insulation material. A thermal vacuum experiment was then carried out to validate the reliability of the established thermal model. It shows that the numerical predictions are in good agreement with the experimental results.

关 键 词：多层打孔隔热材料 热分析 计算模型 热真空实验 

分 类 号：TK124[动力工程及工程热物理—工程热物理]