朱涛,杨凯,朱新新,等. Schmidt–Boelter热流传感器的改进和性能测评[J]. 实验流体力学,2022,36(X):1-7. DOI: 10.11729/syltlx20220029
引用本文: 朱涛,杨凯,朱新新,等. Schmidt–Boelter热流传感器的改进和性能测评[J]. 实验流体力学,2022,36(X):1-7. DOI: 10.11729/syltlx20220029
ZHU T,YANG K,ZHU X X,et al. Improvement, performance test and evaluation for Schmidt–Boelter gage[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-7.. DOI: 10.11729/syltlx20220029
Citation: ZHU T,YANG K,ZHU X X,et al. Improvement, performance test and evaluation for Schmidt–Boelter gage[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-7.. DOI: 10.11729/syltlx20220029

Schmidt–Boelter热流传感器的改进和性能测评

Improvement, performance test and evaluation for Schmidt–Boelter gage

  • 摘要: 为满足常规高超声速风洞连续变迎角试验动态热流测量需求,改进了一种小尺寸Schmidt–Boelter热流传感器。采用热流标定装置对其进行了静态校准和动态测试,得到改进后传感器的灵敏度系数为57.67 μV·kW−1·m2,响应时间约26 ms,截止频率26 Hz,可覆盖1~130 kW/m2的热流范围。基于特征响应时间常数,建立了变迎角速度与最大测量误差的定量关系;参照某阶梯变迎角试验测得的热流数据,对该传感器在一定误差范围内能够满足的最大连续变迎角速度进行了评估。

     

    Abstract: A kind of the small size Schmidt–Boelter gage was improved for measuring dynamic heat flux in the continuous variable attack angle test in the conventional hypersonic wind tunnel. The Schmidt–Boelter gage improved was statically calibrated and dynamically tested by the heat flux calibration devices. The test results show that the sensitivity coefficient is 57.67 μV·kW−1·m2, the response time is 27 ms, the cut-off frequency is 26 Hz and the gage range coverage is 1–130 kW/m2. Then the quantitative relation between the continuous variable attack angle velocity and the maximum test error was established based on the feature response time constant. And referring to the heat flux measured in the step variable attack angle test, the maximum velocity of the continuous variable attack angle supported by the gage was evaluated within a certain margin of error.

     

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