实验流体力学2025，Vol.39Issue(3)：1-11,11.DOI:10.11729/syltlx20240091
暂冲式高超声速风洞快响应TSP测热技术
Heat flux measurement technology using fast-responding TSP in an intermittent hypersonic tunnel
摘要
Abstract
Temperature-Sensitive Paint(TSP)is an optical measurement technique for full-field temperature measurement.Via the improvement of the paint response speed and the progress of the heat flux inversion method,TSP shows great potential for applications in the field of hypersonic aerothermal measurements.However,the existing TSP heat flux inversion methods are faced with problems such as the failure of thermal conductivity model and the inaccuracy of coating parameters estimation when applied to the intermittent hypersonic tunnel,resulting in low accuracy of heat flux determination.This paper has proposed a heat flux inversion method based on the one-dimensional double-layer finite base thermal conduction model.The parameters of the coating and base layers are calibrated numerically iteratively using in-situ gauge data,and the TSP temperature histories are further inverted to the heat flux histories according to the in-situ calibration results of parameters.This method can significantly improve the accuracy and robustness of heat flux inversion in fast TSP measurement conducted in the intermittent hypersonic tunnel.In this paper,the effects of the number of iteration parameters,initial iteration values,time range of iteration and coating thickness non-uniformity on the accuracy of heat flux inversion are investigated,and a six-parameter calibration scheme is established.Subsequently,the feasibility and advantages of the proposed method are validated based on the compression corner experimental data obtained in the Mach-6 intermittent hypersonic tunnel.The experimental results show that the TSP heat flux results obtained by the proposed method are in good agreement with the heat flux gauge results,and the deviation of the steady-stage heat flux is less than 0.15 kW/m2.关键词
高超声速风洞/温敏涂料/气动热测量/热流密度/原位标定Key words
hypersonic wind tunnel/Temperature-Sensitive Paint/aerothermal measurement/heat flux/in-situ calibration分类
数理科学引用本文复制引用
谢忠豪,茆青,刘旭,庄宇,王刚,刘应征,彭迪..暂冲式高超声速风洞快响应TSP测热技术[J].实验流体力学,2025,39(3):1-11,11.基金项目
国家重点研发计划项目(2019YFA0405300) （2019YFA0405300）
国家自然科学基金项目(12227803) （12227803）
