实验流体力学2025，Vol.39Issue(5)：80-87,8.DOI:10.11729/syltlx20230140
热阻式热流传感器在超高速低密度风洞中的应用
Temperature-difference-based heat-flux sensors and their application in hypervelocity low-density wind tunnel
摘要
Abstract
Thin-skin calorimeters,coaxial thermocouples and infrared thermographics have the problems of being sensitive to the noise and high uncertainty in the corresponding measured heat flux densities,though frequently used in hypervelocity low-density wind-tunnel tests,The problems result from the complicated measuring principles and their low sensitivities.Hence,taking the properties of high sensitivity and ease of use into account,Atomic Layer Thermopile(ALTP)heat-flux sensors and small-sized Schmidt-Boelter gauges,two kinds of temperature-difference-based heat-flux sensors,are used to measure the low heat flux in a long duration,and their good performance is confirmed by the experiment conducted in a hypersonic low-density wind tunnel.Meanwhile,considering the fact that the size in diameter is relatively too large and the sensitivity is dependent on the effective length of the sensitive element,the sensitive elements of the ALTP sensor are connected in series by electric films,and the sensitivity of the revised ALTP sensor is multiplied without enlarging the size in diameter,which helps get small-sized ALTP heat-flux sensors in the near future.关键词
原子层热电堆/Schmidt-Boelter热流传感器/灵敏度系数/超高速低密度风洞/同轴热电偶Key words
atomic layer thermopile/Schmidt-Boelter heat-flux sensor/sensitivity/hypervelo-city low-density wind tunnel/coaxial thermocouple引用本文复制引用
杨凯,王宏宇,朱新新,朱涛,陈曦,陶伯万,李杰..热阻式热流传感器在超高速低密度风洞中的应用[J].实验流体力学,2025,39(5):80-87,8.基金项目
国家重点研发计划项目(2022YFB3203900) （2022YFB3203900）
国家自然科学基金项目(11902330) （11902330）
