Performance of DOM and IDA with different angular discretization methods in 3-D absorbing-emitting-scattering media

Ozen G., SELÇUK N.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, vol.65, pp.104-110, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 65
  • Publication Date: 2013
  • Doi Number: 10.1016/j.ijthermalsci.2012.10.009
  • Journal Name: INTERNATIONAL JOURNAL OF THERMAL SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.104-110
  • Keywords: Radiative heat transfer, Participating media, Discrete Ordinates Method (DOM), Improved Differential Approximation (IDA), DISCRETE ORDINATES METHOD, RADIATIVE HEAT-TRANSFER, FLUX MODELS, APPROXIMATION, EQUATION
  • Middle East Technical University Affiliated: Yes

Abstract

Predicted accuracy and computationally efficiency of Discrete Ordinates Method (DOM) and Improved Differential Approximation (IDA) were evaluated by applying both methods to cubical enclosure problems containing purely isotropically/linearly anisotropically scattering/absorbing-emitting-isotropically scattering medium and comparing their predictions with benchmark solutions available in the literature. Performances of DOM and IDA with S-8, S-10 and T-4 quadratures were assessed by comparing their predictions against benchmark solutions. DOM with S-8 and IDA with T-4 were found to provide more accurate and efficient solutions compared to other discretization schemes. However, overall comparisons reveal that DOM S-8 produces higher accuracy and computational efficiency than IDA T-4 on all test problems under consideration. (C) 2012 Elsevier Masson SAS. All rights reserved.