实验流体力学2026，Vol.40Issue(1)：127-134,8.DOI:10.11729/syltlx20230148
一种表面热流辨识结果的不确定度分析方法
An analysis method for the uncertainty of heat flux estimation
周宇 1邵元培 1钱炜祺 1郑凤麒1
作者信息
- 1. 中国空气动力研究与发展中心 计算空气动力研究所,绵阳 621000
- 折叠
摘要
Abstract
Identifying the surface aerodynamic heat flux using the time-series temperature data collected from internal measurement points of the thermal protection system is a crucial method for acquiring the surface thermal environment of high-speed aircraft.Analyzing and quantifying the uncertainty of identification results can provide a quantitative criterion for the validity of test data and support the safety assessment of"ex treme thermal service conditions"in thermal environments.Surface heat flux identification is a typical ill-posed problem,and measurement noise can lead to explosion in high frequency,so regularization is needed to obtain stable solution.Regularization reduces the uncertainty of estimation results,but it also brings obstacles to uncertainty quantification analysis.Therefore,regularization is regarded as a low-pass filter,and the identification results are transformed into the frequency domain to analyze the uncertainty of identification results.Finally,the uncertainty sources of typical aerospace surface heat flux sensor are analyzed.The effectiveness of uncertainty quantification is verified by Monte Carlo method.关键词
表面热流/辨识/不适定性/正则化/不确定度/低通滤波器Key words
surface heat flux/identification/ill-posed/regularization/uncertainty/low pass filter分类
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周宇,邵元培,钱炜祺,郑凤麒..一种表面热流辨识结果的不确定度分析方法[J].实验流体力学,2026,40(1):127-134,8.
