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CHT'01 - Advances in Computational Heat Transfer II. Proceedings of a Second Symposium
2001, 20-25 May, Palm Cove, Queensland, Australia

COMPARATIVE PERFORMANCE OF NON-GRAY GAS MODELING TECHNIQUES AND BAND REGROUPING EFFICIENCIES

pages 1009-1016
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摘要

This study compares the relative efficiencies (accuracy and computation time) of five methods developed for characterizing radiative exchanges in enclosures containing real gases: the correlated-k method (CK), three versions of the hybrid CK/statistical narrow band method (SNB-CK) and the spectral line based weighted sum of gray gases method (SLW). Attention is drawn on the hybrid SNB-CK method featuring band regrouping strategies. The version proposed in this paper, which is characterized by a selective regrouping of bands, leads to very good results while the computation time is significantly decreased with respect to the original SNB-CK version.

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