期刊
INVERSE PROBLEMS IN SCIENCE AND ENGINEERING
卷 29, 期 13, 页码 2516-2533出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17415985.2021.1932872
关键词
Inverse method; conduction-radiation heat transfer; refractive index; semi-transparent media
This paper retrieves the temperature-dependent refractive index distribution in parallel-plane semi-transparent media with combined conduction-radiation heat transfer, using the finite volume method and discrete ordinates method. The results show a remarkable difference between spatially and temperature-dependent refractive index profiles. The temperature-dependent refractive index distribution can be retrieved in a good range of errors for noisy data.
The aim of this paper is to retrieve the temperature-dependent refractive index distribution in parallel-plane semi-transparent media with combined conduction-radiation heat transfer, by the measurement of exit intensities over the boundaries. The finite volume method in combination with the discrete ordinates method is used to solve the energy equation. The results of the direct solution for both linear-spatially and linear-temperature-dependent refractive index distributions are compared and the effects of the main parameters are examined. The results confirm a remarkable difference between the results for spatially and temperature-dependent refractive index profiles. Finally, the refractive index profile is estimated using the conjugate gradient method in an inverse manner. The coefficients of the linear profile are estimated for three cases with different levels of measurement errors; 1%, 3% and 5%. The results show that the temperature-dependent refractive index distribution can be retrieved in a good range of errors for noisy data.
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