实验流体力学2012，Vol.26Issue(1)：74-78,5.
表面热流辨识技术在边界层转捩位置测量中的应用初步研究
A preliminary study for application of surface heat flux estimation technology in transition measurement
摘要
Abstract
Near-surface thermocouples are the most prevailing devices to detect the boundary layer transition of flight vehicle in flight test. But some strict requirements for the measurement range of the thermocouple and the structural intensity are needed due to the small distance between the heating surface and the measurement position. So, a transition determination method based on surface heat flux estimation is developed. The advantage of this method lies in that the thermocouple can be placed relatively far from the heating surface. However, farther the thermocouple is placed, stronger is the ill-posedness of the estimation problem. So, when surface heat flux estimation method is applied for transition determination from interior temperature measurements, the measurement position is still needed to be carefully selected by simulation-based estimation strategy. The surface heat flux estimation method for two-dimensional heat conduction model is then presented in this paper and two cases are investigated with simulation-based estimation strategy. The results show that the transition determination method based on surface heat flux estimation is feasible and effective.关键词
转捩测量/表面热流辨识/飞行试验/再入飞行器Key words
transition measurement /surface heat flux estimation/flight test/reentry vehicle分类
航空航天引用本文复制引用
钱炜祺,周宇,何开锋,石友安..表面热流辨识技术在边界层转捩位置测量中的应用初步研究[J].实验流体力学,2012,26(1):74-78,5.基金项目
国家自然科学基金项目(11072258) （11072258）
空气动力学国家重点实验室基金资助(SKLA2009A0103) （SKLA2009A0103）
