薄膜热流计与原子层热电堆热流传感器的激波风洞试验对比  

Comparative analysis between thin-film resistance gauges and ALTP sensors in shock tunnel tests

作　　者：陈苏宇[1] 刘济春[1] 杨凯[1] 朱涛[1] 朱新新[1] 王辉[1] CHEN Suyu;LIU Jichun;YANG Kai;ZHU Tao;ZHU Xinxin;WANG Hui(Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]中国空气动力研究与发展中心超高速空气动力研究所,绵阳621000

出　　处：《实验流体力学》2024年第5期90-97,共8页Journal of Experiments in Fluid Mechanics

基　　金：国家重点研发计划项目(2020YFA0405700);国家自然科学基金项目(11902330)。

摘　　要：激波风洞试验的主要测试量是热流密度,且多采用薄膜热流计进行测试,但薄膜热流计热流测试结果缺乏直接验证手段,存在测热结果不确定度偏大等问题。原子层热电堆(ALTP)热流传感器响应时间短且线性度好,结合高精度可溯源的热流传感器标定实验,可保证ALTP热流传感器测热结果的准确性和可靠性。在多个流场条件下的激波风洞试验中开展了薄膜热流计和ALTP热流传感器测热结果交叉对比验证。对比试验显示:ALTP热流传感器和薄膜热流计在不同流场参数下测热结果相对稳定,中高热流下两者测热结果相差在8%以内。结合对比标定溯源链以及激波风洞试验测热结果的讨论,展现了利用ALTP热流传感器在激波风洞试验中在线标定薄膜热流计的可行性。In the shock tunnel tests,the main parameter to measure is the heat flux density,and the Thin-Film Resistance Gauges(TFRGs)are frequently used.As the uncertainty of the measured heat flux with TFRGs is relatively high resulting from the lack of direct validation method for TFRGs,the Atomic Layer Thermopile(ALTP)heat-flux sensors are applied in shock tunnel tests for comparison with the TFRGs.ALTP sensors have a fast response time and a good linearity,and it can be used in a long duration to measure low heat flux density,which ensures that they can be easily calibrated with the high-accuracy light-based calibration device,so the transfer calibration method is established to on-line calibrate TFRGs in the shock tunnel tests.The experimental results confirm the stable measured heat flux with the ALTP sensors and the TFRGs in the different shock tunnel tests,and the difference between the two kinds of heat-flux sensors is less than 8%.Based on the discussion on the tracing chains of the transfer method for calibrating heat-flux sensors and the measured heat flux in tests,the comparison results show the potential that the ALTP heat-flux sensors can be used to on-line calibrate TFRGs in shock tunnel tests.

关 键 词：热流密度 薄膜热流计 原子层热电堆 激波风洞 在线标定 

分 类 号：V441[航空宇航科学与技术—飞行器设计] TP212.11[自动化与计算机技术—检测技术与自动化装置]