A Fast Approximated Method Of Radiative Exchange For Combined Heat Transfer Simulation

Seigo Sakai, Shigenao Maruyama

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The radiation element method (REM) was improved by using view factor approximation instead of the ray-tracing method to estimate the view factors. This improved method was applied to analyze radiative exchange between arbitrary three-dimensional bodies comprised of diffuse surfaces. The view factor approximation required one-sixth of the CPU time of the ray-tracing method to estimate the view factors for a model comprising of 7,344 surface elements. The total CPU time by the incomplete Cholesky conjugate gradient (ICCG) method plus the view factor approximation was reduced to one-fifth of that of the ICCG plus ray-tracing method.

Original languageEnglish
Pages (from-to)473-487
Number of pages15
JournalNumerical Heat Transfer, Part B: Fundamentals
Volume44
Issue number5
DOIs
Publication statusPublished - 2003 Nov

ASJC Scopus subject areas

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

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