中国物理B ›› 2008, Vol. 17 ›› Issue (4): 1312-1317.doi: 10.1088/1674-1056/17/4/027

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Simulation study on reconstruction model of three-dimensional temperature distribution within visible range in furnace

刘冬, 王飞, 黄群星, 严建华, 池涌, 岑可法   

  1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2007-05-07 修回日期:2007-10-12 出版日期:2008-04-20 发布日期:2008-04-20
  • 基金资助:
    Project supported by the State Key Program of National Natural Science Foundation of China (Grant No 60534030) and Program for Changjiang Scholars and Innovative Research Team in University (Grant No IRT0434).

Simulation study on reconstruction model of three-dimensional temperature distribution within visible range in furnace

Liu Dong(刘冬), Wang Fei(王飞)†, Huang Qun-Xing(黄群星), Yan Jian-Hua(严建华), Chi Yong(池涌), and Cen Ke-Fa(岑可法)   

  1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
  • Received:2007-05-07 Revised:2007-10-12 Online:2008-04-20 Published:2008-04-20
  • Supported by:
    Project supported by the State Key Program of National Natural Science Foundation of China (Grant No 60534030) and Program for Changjiang Scholars and Innovative Research Team in University (Grant No IRT0434).

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摘要： This paper presents a reconstruction model of three-dimensional temperature distribution in furnace based on radiative energy images captured by charge-coupled device (CCD) cameras within the visible wavelength range. Numerical simulation case was used in this study and a zigzag eccentric temperature distribution was assumed to verify the model. Least square QR-factorization (LSQR) method was introduced to deal with reconstruction equation. It is found that the reconstructed temperature distributions in low-temperature areas had some fluctuations and high-temperature areas were reconstructed well. The whole reconstruction relative error was mainly due to errors in low-temperature areas and the relative error for highest-temperature reconstruction was quite small.

Abstract: This paper presents a reconstruction model of three-dimensional temperature distribution in furnace based on radiative energy images captured by charge-coupled device (CCD) cameras within the visible wavelength range. Numerical simulation case was used in this study and a zigzag eccentric temperature distribution was assumed to verify the model. Least square QR-factorization (LSQR) method was introduced to deal with reconstruction equation. It is found that the reconstructed temperature distributions in low-temperature areas had some fluctuations and high-temperature areas were reconstructed well. The whole reconstruction relative error was mainly due to errors in low-temperature areas and the relative error for highest-temperature reconstruction was quite small.

Key words: three-dimensional temperature distribution, radiative energy images, visible range, charge-coupled device

中图分类号:  (Image processing)

  • 07.05.Pj
07.20.Hy (Furnaces; heaters) 42.30.Wb (Image reconstruction; tomography) 42.79.Pw (Imaging detectors and sensors)