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PARAMETRIC INVESTIGATION OF THE TRANSIENT RADIATIVE TRANSFER IN PARTICIPATING MEDIA AND RAPID ESTIMATION OF THE RADIATIVE PARAMETERS

DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.1040
pages 1121-1136

Ya-Tao Ren
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China

Hong Qi
School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001, PR China; Key Laboratory of Aerospace Thermophysics, Ministry of Industry and Information Technology, Harbin, China, 150001

Zhong-Yuan Lew
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China

Liming Ruan
School of Energy Science and Engineering, Harbin Institute of Technology 92 West Dazhi Street, Harbin, Heilongjiang, 150001, P.R. China; Key Laboratory of Aerospace Thermophysics, Ministry of Industry and Information Technology, Harbin, China, 150001

Heping Tan
Key Laboratory of Aerospace Thermophysics of MIIT, School of Energy Science of Engineering, Harbin Institute of Technology, Harbin 150001, China

Abstrakt

A parametric investigation was performed involving different extinction coefficients and scattering albedo of participating media. The transient radiative transfer in one-dimensional homogeneous media with ultra-short Gaussian pulse laser irradiated was investigation by the finite volume method in the present research. Furthermore, the concepts of Optimal Detection Distance and Critical Optical Thickness were presented and investigated thoroughly. On this basis, the inverse transient radiation analyses were carried out for retrieving the extinction coefficient β and scattering albedo ω in a homogeneous absorbing and isotropic scattering but non-emitting plane-parallel slab applying three inverse methods, i.e. the Relation, SPSO and SPSO-Relation. The proposed SPSO-Relation was demonstrated to be superior to the other two methods which was fast and accurate.

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