Computational investigation of different turbulent models when predicting airflow in an enclosure

type de publication      communication internationale avec actes publiés
date de publication 27-07-2008
auteur(s) Wang Xi; Naji Hassan; Mezrhab Ahmed
numéro de papier 61276
  
conférence ASME Pressure Vessels & Piping Confrence
     lieu Chicago, USA
     nom des actes Proceedings of PVP2008
  
résumé In the present study, a numerical investigation is carried out for an isothermal case, a hot case and a cold case with Fluent code. Three turbulence models are considered: the k-e realisable model, the RNG k-e model and the RSM linear model. The obtained results are compared to experiments and show generally a good agreement for the mean velocities and temperatures, but less satisfactory for the turbulent stress. The performance of the RSM model is remarkable. Even if none of the models is able to give the exact experimental pattern on the map turbulence, the RSM model seems able to predict such configuration.
mots clés Computational fluid Dynamics, Room ventilation, wall jet, airflow, linear turbulence models.
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