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, cilt.65, ss.104-110, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 65
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.ijthermalsci.2012.10.009
  • Dergi Adı: INTERNATIONAL JOURNAL OF THERMAL SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.104-110
  • Anahtar Kelimeler: Radiative heat transfer, Participating media, Discrete Ordinates Method (DOM), Improved Differential Approximation (IDA), DISCRETE ORDINATES METHOD, RADIATIVE HEAT-TRANSFER, FLUX MODELS, APPROXIMATION, EQUATION
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.