实验流体力学2013，Vol.27Issue(4)：17-22,6.
表面热流可辨识性初步分析
A preliminary analysis of identifiability of surface heat flux
摘要
Abstract
The analysis of identifiability of surface heat flux can be used to determine the location of the temperature sensor and its measurement accuracy for the TPS (Thermal Protection System) of flight vehicle,which is meaningful in engineering practice.In this paper,based on non-dimensionalization analysis and simulation of surface heat flux estimation,the influences of the thermal parameters of TPS material,the depth location of temperature sensor,and the spectrum characteristic of surface heat flux on the estimation result are collected and a special nondimensional parameter,the Fourier number corresponding on the period of surface heat flux,to scale the heat flux inversion problems is found.Moreover,this Fourier number is used as a criterion,and the rules of identifiability of surface heat flux under different measurement noise levels are developed.关键词
表面热流/可辨识性/傅立叶数/测量噪声Key words
surface heat flux/ identifiability/ Fourier number / measurement noise分类
航空航天引用本文复制引用
钱炜祺,周宇,邵元培,杨驰,黄建栋..表面热流可辨识性初步分析[J].实验流体力学,2013,27(4):17-22,6.基金项目
国家自然科学基金(10702076、11072258) （10702076、11072258）
空气动力学国家重点实验室基金(SKLA2009A0103) （SKLA2009A0103）
