Inverse Analysis of Radiative Properties of Internal Medium and Surface for Cylindrical System Using Csm-Cgm Approach

31 Pages Posted: 1 Feb 2023

See all articles by Chao Zhang

Chao Zhang

Dalian University of Technology

Ben-Wen Li

Dalian University of Technology

Rui-Rui Zhou

University of Shanghai for Science and Technology

Pan-Xin Li

Dalian University of Technology

Lingyun Huang

Kunming University of Science and Technology

Abstract

An inverse analysis is conducted to simultaneously estimate the radiative properties in a 2D cylindrical system including the extinction coefficient, scattering albedo, and the wall emissivity from the knowledge of the radiative heat flux over different boundaries. In which the collocation spectral method (CSM) is developed to solve the forward problem, the conjugate gradient method (CGM) is employed to solve the inverse problem, and the complex-variable-differentiation method is used to treat the sensitivity problem, separately. Meanwhile, the effects of measurement errors, initial values, and imaginary values of complex variables on the precision of the inverse analysis are investigated. Results show that the proposed inverse analysis can successfully retrieve the unknown radiative physical properties of 2D cylindrical system. Under the same physical properties, good inversion results can be obtained by using different wall (end walls and side wall) radiative heat fluxes, but the inversion efficiency from sidewall radiative heat flux is higher. Besides, it is found that, the inversion for the scattered participating medium is more efficient than that for the non-scattered participating medium; the true values and iterative convergence values have little effect on the inversion result; the influence of the initial values and the imaginary values of the complex variable on the inversion cannot be ignored.

Keywords: inverse analysis, radiative physical properties, collocation spectral method, conjugate gradient method, complex-variable-differentiation method, 2D cylindrical system

Suggested Citation

Zhang, Chao and Li, Ben-Wen and Zhou, Rui-Rui and Li, Pan-Xin and Huang, Lingyun, Inverse Analysis of Radiative Properties of Internal Medium and Surface for Cylindrical System Using Csm-Cgm Approach. Available at SSRN: https://ssrn.com/abstract=4345114 or http://dx.doi.org/10.2139/ssrn.4345114

Chao Zhang

Dalian University of Technology ( email )

Huiying Rd
DaLian, LiaoNing, 116024
China

Ben-Wen Li (Contact Author)

Dalian University of Technology ( email )

Huiying Rd
DaLian, LiaoNing, 116024
China

Rui-Rui Zhou

University of Shanghai for Science and Technology ( email )

Pan-Xin Li

Dalian University of Technology ( email )

Huiying Rd
DaLian, LiaoNing, 116024
China

Lingyun Huang

Kunming University of Science and Technology ( email )

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