| 基于辐射换热理论研究水雾对红外辐射测温仪的影响 |
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| 引用本文： | 刘玉英,张欣欣.基于辐射换热理论研究水雾对红外辐射测温仪的影响[J].红外技术,2008,30(10). |
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| 作者姓名： | 刘玉英 张欣欣 |
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| 作者单位： | 1. 北京航空航天大学能源与动力工程学院,北京,100083
2. 北京科技大学机械学院热能工程系,北京,100083 |
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| 摘 要： | 从辐射、吸收或散射性参与介质的辐射换热机理出发,通过建立有参与性介质影响时辐射测温问题的物理模型与数学模型,探讨了当高温物体表面被水雾遮盖时,采用单色,比色红外辐射测温仪进行温度测量时所受到的影响.参与性介质影响下辐射测温问题的数学模型主要包括介质辐射换热模型和辐射测温仪模型.模型求解中水雾的辐射特征由Mie散射理论求解,考虑到辐射测温仪的工作特性,采用在波带上积分的方法处理水雾随光谱变化的辐射特性,并采用离散坐标法求解谱带辐射传递方程.研究表明,水雾粒子介质的粒度分布情况及辐射测温仪工作波长是测温体系的两个重要的影响因素.受到水雾介质的衰减作用,单色辐射测温仪的测量值小于真实值,比色测温仪的测量值则随着工作波长的不同可能比真实值偏大,也可能偏小.
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| 关 键 词： | 参与性介质 红外辐射测温仪 辐射换热 水雾 |
Investigation on the Effects of Water Fog on Infrared Radiation Pyrometer Based on the Radiation Heat Transfer Theory |
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| LIU Yu-ying,ZHANG Xin-xin.Investigation on the Effects of Water Fog on Infrared Radiation Pyrometer Based on the Radiation Heat Transfer Theory[J].Infrared Technology,2008,30(10). |
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| Authors: | LIU Yu-ying ZHANG Xin-xin |
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| Affiliation: | LIU Yu-ying1,ZHANG Xin-xin2(1.School of Jet Propulsion,Beijing University of Aeronautics & Astronautics,Beijing 100083,China,2.Thermal Engineering Department,University of Science , Technology Beijing,China) |
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| Abstract: | On the basis of radiation heat transfer mechanism of radiative,absorbing and scattering media,the physical and mathematical model for the radiative temperature measurement problem of high temperature surface under the influence of participating media is built,and the influence of water fog on one-color and two-color infrared radiation pyrometer in the temperature measurement problem of high temperature surface covered with water fog is analyzed.The mathematical model consists of radiation heat transfer mode... |
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| Keywords: | participating media infrared radiation pyrometer radiation heat transfer water fog |
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