Differential approximations for transient radiative transfer in refractive planar media with pulse irradiation

M. Bhuvaneswari, Chih-Yang Wu

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Transient radiative transfer in an anisotropically scattering refractive planar medium with pulse irradiation is solved by various approximation methods, such as P-1, P-1 parabolic, P1/3 and two-flux. The time-resolved transmittance and reflectance are calculated for various radiative parameters, and are compared with those obtained by the discrete ordinate method (DOM). Among the approximation methods considered, the P1/3 approximation is the better one, because its results are in overall good agreement with those obtained by the more rigorous DOM, except the transmittance around the peak for neither thin nor very thick slabs. It is found that the curved paths of radiation and the internal reflection of the back scattered radiation enhance the effect of scattering.

Original languageEnglish
Pages (from-to)389-401
Number of pages13
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume110
Issue number6-7
DOIs
Publication statusPublished - 2009 Apr 1

All Science Journal Classification (ASJC) codes

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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