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首页> 外文期刊>Journal of Heat Transfer >Application of Landweber Method for Three-Dimensional Temperature Field Reconstruction Based on the Light-Field Imaging Technique
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Application of Landweber Method for Three-Dimensional Temperature Field Reconstruction Based on the Light-Field Imaging Technique

机译：Landweber方法在基于光场成像技术的三维温度场重构中的应用

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摘要

Combined with the light-field imaging technique, the Landweber method is applied to the reconstruction of three-dimensional (3D) temperature distribution in absorbing media theoretically and experimentally. In the theoretical research, simulated exit radiation intensities on the boundary of absorbing media according to the computing model of light field are employed as inputs for inverse analysis. Compared with the commonly used iterative methods, i.e., the least-square QR decomposition method and algebraic reconstruction technique (ART), the Landweber method can produce reconstruction results with better quality and less computational time. Based on the numerical study, an experimental investigation is conducted to validate the suitability of the proposed method. The temperature distribution of the ethylene diffusion flame is reconstructed by using the Landweber method from the flame image captured by a light-field camera. Good agreement was found between the reconstructed temperature distribution and the measured temperature data obtained by a thermocouple. All the experimental results demonstrate that the temperature distribution of ethylene flame can be reconstructed reasonably by using the Landweber method combined with the light-field imaging technique, which is proven to have potential for the use in noncontract measurement of temperature distribution in practical engineering applications.
机译：结合光场成像技术，在理论上和实验上将Landweber方法应用于吸收介质中三维（3D）温度分布的重构。在理论研究中，根据光场的计算模型将吸收介质边界上的模拟出射辐射强度用作反分析的输入。与最常用的迭代方法（即最小二乘QR分解方法和代数重建技术（ART））相比，Landweber方法可以产生质量更高，计算时间更少的重建结果。在数值研究的基础上，进行了实验研究以验证该方法的适用性。乙烯扩散火焰的温度分布是使用Landweber方法从光场相机捕获的火焰图像中重建的。在重建的温度分布和通过热电偶获得的测得温度数据之间发现了很好的一致性。所有的实验结果表明，结合使用Landweber方法和光场成像技术可以合理地重建乙烯火焰的温度分布，这被证明在实际工程应用中可以用于非合同的温度分布测量。

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  • 来源
    《Journal of Heat Transfer》 |2018年第8期|082701.1-082701.11|共11页
  • 作者

    Huang Xing; Qi Hong; Zhang Xiao-Luo; Ren Ya-Tao; Ruan Li-Ming; Tan He-Ping;

  • 作者单位

    Harbin Inst Technol, Sch Energy Sci & Engn, 92 West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, 92 West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, 92 West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, 92 West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, 92 West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, 92 West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    light-field imaging; reconstruction of temperature field; Landweber method;

    机译：光场成像;温度场重构;Landweber法;

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