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Numerical simulation of turbulent flow through a straight square duct using a near wall linear model

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2007
auteur(s) Ahmed Rechia; Naji Hassan; Mompean Gilmar; El Marjani Abdellatif
journal (abréviation) International Journal of Multiphysics (IJM)
volume (numéro) 1(3)
  
pages 317 – 336
résumé The aim of this work is to predict numerically the turbulent flow through a straight square duct using Reynolds Average Navier-Stokes equations (RANS) by the widely used and a near wall turbulence models. To handle wall proximity and no-equilibrium effects, the first model is modified by incorporating damping functions via the eddy viscosity relation. The predicted results for the streamwise, spanwise velocities and the Reynolds stress components are compared to those given by the model and by the direct numerical simulation (DNS) data of Gavrilakis (J. Fluid Mech., 1992). In light of these results, the proposed model is found to be generally satisfactory for predicting the considered flow.
mots clés Computational fluid mechanics, Reynolds Average Navier-Stokes k-epsilon turbulence models, finite-volume CFD algorithm, duct flow.
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