中国物理B ›› 2020, Vol. 29 ›› Issue (11): 110202-.doi: 10.1088/1674-1056/aba608

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Shuang-Cheng Sun(孙双成)1,2,†(), Guang-Jun Wang(王广军)1,2, Hong Chen(陈红)1,2   

  • 收稿日期:2020-05-04 修回日期:2020-05-26 接受日期:2020-07-15 出版日期:2020-11-05 发布日期:2020-11-03

An efficient inverse approach for reconstructing time- and space-dependent heat flux of participating medium

Shuang-Cheng Sun(孙双成)1,2, †, Guang-Jun Wang(王广军)1,2, and Hong Chen(陈红)1,2$   

  1. 1 School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China
    2 Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing 400044, China
  • Received:2020-05-04 Revised:2020-05-26 Accepted:2020-07-15 Online:2020-11-05 Published:2020-11-03
  • Contact: Corresponding author. E-mail: scsun@cqu.edu.cn
  • Supported by:
    the Natural Science Foundation of Chongqing (CSTC, Grant No. 2019JCYJ-MSXMX0441).

Abstract:

The decentralized fuzzy inference method (DFIM) is employed as an optimization technique to reconstruct time- and space-dependent heat flux of two-dimensional (2D) participating medium. The forward coupled radiative and conductive heat transfer problem is solved by a combination of finite volume method and discrete ordinate method. The reconstruction task is formulated as an inverse problem, and the DFIM is used to reconstruct the unknown heat flux. No prior information on the heat flux distribution is required for the inverse analysis. All retrieval results illustrate that the time- and space-dependent heat flux of participating medium can be exactly recovered by the DFIM. The present method is proved to be more efficient and accurate than other optimization techniques. The effects of heat flux form, initial guess, medium property, and measurement error on reconstruction results are investigated. Simulated results indicate that the DFIM is robust to reconstruct different kinds of heat fluxes even with noisy data.

Key words: decentralized fuzzy inference, surface heat flux reconstruction, inverse heat transfer problem, participating medium