摘要
针对辐射式热防护系统设计输入变量的随机分布问题,结合有限元瞬态传热方法和蒙特卡洛直接抽样方法,建立了一种概率瞬态热分析方法。针对典型辐射式多层热防护系统,考虑各层热防护方案的厚度、材料热导率、比热容、密度等因素的随机分布,仿真得到了热防护系统表面最高温度和背面最高温度的随机分布特性,以及设计参数的灵敏度分析结果,对热防护系统的设计工作具有指导意义。
Thermal response uncertainties of a multi-layer thermal protection system（ TPS） under re-entry aerodynamic-heating are predicted using Monte Carlo simulation method. The transient heat transfer problems are simulated using finite element method（ FEM）. The effects of uncertainties of geometrical thickness,thermal conductivity,specific heat and density on TPS temperature response are considered.Sensitivity analysis is accomplished to obtain probabilistic characteristics. The simulation results show that,the uncertainties of the material properties and TPS geometry had a great effect on the maximum temperature,and the above method could be used in engineering design.
作者
辛健强
陈景茂
董永朋
徐腾飞
洪文虎
Xin Jianqiang Chen Jingmao Dong Yongpeng Xu Tengfei Hong Wenhu(Research and Development Center, China Academy of Launch Vehicle Technology, Beijing 100076,China)
出处
《战术导弹技术》
北大核心
2017年第1期47-54,共8页
Tactical Missile Technology
基金
国家自然科学基金(11572353
51572298
11502306)
关键词
热防护
蒙特卡洛模拟
热分析
高超声速
飞行器
thermal protection system
Monte Carlo simulation
thermal analysis
hypersonic
vehicle
