Radiation element method for transient hyperbolic radiative transfer in plane-parallel inhomogeneous media

Zhixiong Guo, Sunil Kumar

Research output: Contribution to journalArticle

Abstract

In this study the radiation element method is formulated to solve transient radiative transfer with light radiation propagation effect in scattering, absorbing, and emitting media with inhomogeneous property. The accuracy of the method is verified by good agreement between the present calculations and Monte Carlo simulations. The sensitivity of the method against element size, ray emission number, and time increment size is examined. The transient effect of radiation propagation is essential in short-pulse laser radiation transport when the input pulse width is not considerably larger than the system radiation propagation time. The transient characteristics of radiative transfer are investigated in the media subject to collimated laser irradiation and/or diffuse irradiation with temporal Gaussian and/or square profiles. The inhomogeneous profile of extinction coefficient of the medium affects strongly the transient radiative flux divergence inside the medium.

Original languageEnglish (US)
Pages (from-to)371-387
Number of pages17
JournalNumerical Heat Transfer, Part B: Fundamentals
Volume39
Issue number4
DOIs
StatePublished - Apr 2001

ASJC Scopus subject areas

  • Numerical Analysis
  • Modeling and Simulation
  • Condensed Matter Physics
  • Mechanics of Materials
  • Computer Science Applications

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