玻璃钢/复合材料Issue(4)：35-41,7.
高超声速再入热环境下防热复合材料烧蚀传热计算及影响因素分析
STUDY ON ABLATION HEAT TRANSFER CALCULATION AND INFLUENCING FACTORS OF THERMAL PROTECTION MATERIALS UNDER HYPERSONIC THERMAL ENVIRONMENT
杨驰 1刘娜 1孔维萱 1张利嵩 1陈政伟1
作者信息
- 1. 北京航天长征飞行器研究所,高超声速飞行器防隔热与热控技术中心,北京 100086
- 折叠
摘要
Abstract
As the accuracy of the ablation temperature field calculation of thermal protective composite materials was not high, a calculation method was established to analyze the carbon-based and silicon-based thermal protective material under specific thermal environment.Comparing the ablation temperature results with the simplified model and ground test results, the method in this study was proved to be reasonable.Several thermal parameters, thermal conductivity, density, surface emissivity, pyrolysis and carbide, were studied under specific thermal environment to analyze the influence law of the factors on the ablation heat transfer.The results show that the influence of various factors on the ablation heat transfer behavior is different.The thermal conductivity and the emissivity has a major contribution to the influence on internal and external temperature of the thermal protective material, respectively.The influence of the emissivity on the internal temperature is time-dependent.The activation energy has a certain impacts on the internal temperature of the material.Both the activation energy and thermal conductivity has significant impacts on the material pyrolysis carbonization process.The results provide an important theoretical basis to the correction of the ablative heat transfer calculation method.关键词
特定热环境/影响规律/烧蚀传热/内部温度Key words
specific thermal environment/influence law/ablative heat transfer/internal temperature分类
通用工业技术引用本文复制引用
杨驰,刘娜,孔维萱,张利嵩,陈政伟..高超声速再入热环境下防热复合材料烧蚀传热计算及影响因素分析[J].玻璃钢/复合材料,2017,(4):35-41,7.
