| 薄膜电阻温度计原理性误差分析及数据处理方法研究 |
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| 引用本文： | 曾磊,石友安,孔荣宗,贺立新,桂业伟.薄膜电阻温度计原理性误差分析及数据处理方法研究[J].实验流体力学,2011,25(1):79-83. |
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| 作者姓名： | 曾磊 石友安 孔荣宗 贺立新 桂业伟 |
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| 作者单位： | 中国空气动力研究与发展中心,四川,绵阳,621000 |
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| 基金项目： | 国家自然科学基金项目(10702076) |
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| 摘 要： | 薄膜电阻温度计是高超声速测热试验中一种常用的传感器,多用于激波风洞中.改进薄膜电阻温度计测热数据的后处理方法,分析其原理性误差,提出修正方法,可以进一步提高热流测量精度,为防热设计提供可靠数据.应用三维热传导理论,考虑热流和温升的耦合影响,计算了气动加热条件下薄膜电阻温度计结构温升情况,得到了铂层内的温度分布规律,并与一维半无限简化理论得到的薄膜电阻温度计表层温度相互对比,得到了模型简化带来的原理性误差;建立了由表面温升计算表面热流的导热反问题计算方法,与经典的Cook-Felderman处理公式和热电模拟网络处理方法相互对比,提出了修止热流值的方法,为提高热流测量精度提供了一种可行的手段.
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| 关 键 词： | 薄膜电阻温度计 热流辨识 数据处理 |
Study on principle error analysis and data processing method of thin film resistance thermometer |
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| ZENG Lei,SHI You-an,KONG Rong-zong,HE Li-xin,GUI Ye-wei.Study on principle error analysis and data processing method of thin film resistance thermometer[J].Experiments and Measur in Fluid Mechanics,2011,25(1):79-83. |
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| Authors: | ZENG Lei SHI You-an KONG Rong-zong HE Li-xin GUI Ye-wei |
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| Institution: | ZENG Lei,SHI You-an,KONG Rong-zong,HE Li-xin,GUI Ye-wei(China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China) |
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| Abstract: | Thin film resistance thermometer is usually used in shock wave tunnel to measure the heat flux.A postprocessor method which is based on one-dimension inverse heat conduction problem is studied and the coupling relationship between temperature rising and heat flux is considered to improve the data precision of heat flux measurement.One-dimension inverse heat conduction analysis method is used to convert voltage signal to heat flux.The distribution of temperature of platinum film is calculated by finite eleme... |
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| Keywords: | thin film resistance thermometer heat flux identification data processing |
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