Identification of the Radiative Parameters-Albedo and Optical Thickness—Of the Juncus maritimus Fiber

Autor:	Marcelo Borges dos Santos, Luís Mauro Moura, Dominique Baillis
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	discrete ordinate method optical thickness General Materials Science Neumann method Gauss linearization Juncus maritimus RTE albedo
Zdroj:	Materials Volume 16 Issue 5 Pages: 1891
ISSN:	1996-1944
DOI:	10.3390/ma16051891
Popis:	The present work aims to characterize the radiative thermal properties albedo and optical thickness of Juncus maritimus fibers using a FTIR spectrometer. Measurements of normal/directional transmittance and normal and hemispherical reflectance are performed. The numerical determination of the radiative properties is conducted through the computational treatment of the Radiative Transfer Equation (RTE) using the Discrete Ordinate Method (DOM), together with the inverse method, which is done through Gauss linearization. As it is a non-linear system, iterative calculations are necessary, which demand a significant computational cost, and, to optimize this problem, the Neumann method is used for the numerical determination of the parameters. These radiative properties are useful to quantify the radiative effective conductivity.
Databáze:	OpenAIRE
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