Inscrição na biblioteca: Guest
TSFP DL Home Arquivos Comitê executivo

SHEAR-IMPROVED SMAGORINSKY MODEL FOR LARGE-EDDY SIMULATION OF WALL-BOUNDED TURBULENT FLOWS

Emmanuel Leveque
Laboratoire de physique, CNRS, Université de Lyon, Ecole normale supérieure de Lyon 46 Allée d'Italie, F-69364 Lyon cedex 7, France

Federico Toschi
Istituto per le Applicazioni del Calcolo CNR Viale del Policlinico 137, I-00161, Roma, Italy

Liang Shao
Laboratoire de Mécanique des Fluides et d'Acoustique CNRS, Université de Lyon, Ecole centrale de Lyon, Université Lyon 1, INSA de Lyon 36 avenue Guy de Collongue F-69134 Ecully cedex, France

Jean Pierre Bertoglio
Laboratoire de Mecanique des Fluides et d'Acoustique UMR 5509 Ecole Centrale de Lyon 36 Av. Guy de Collongue, 69130 Ecully, FRANCE

Resumo

A refinement of the standard Smagorinsky model is proposed in order to take into account the inhomogeneities of the mean flow. First results concerning turbulent plane- channel flows and backward-facing step flows indicate that the model possesses a good predictive capability, essentially equivalent to the dynamic Smagorinsky model, but with a computational cost and a manageability comparable to the original Smagorinsky model.