ARTICLE:

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

Vincent Goutiere
Research Group in Processes and Systems Engineering, Université du Québec à Chicoutimi, Québec, Canada

Andre Charette
Research Group in Processes and Systems Engineering, Université du Québec à Chicoutimi, Québec, Canada

Laszlo Kiss
Research Group in Processes and Systems Engineering, Université du Québec à Chicoutimi, Québec, Canada

ABSTRACT

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.

 download article

1009-1016 pages

« Previous article         Next article »