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Analyse du débit d'air dans un entrepôt frigorifique à l'aide de la dynamique des fluides informatisée.

Analysis of the air flow in a cold store by means of computational fluid dynamics.

Auteurs : HOANG M. L., VERBOVEN P., BAERDEMAEKER J. de, et al.

Type d'article : Article, Article de la RIF

Résumé

Airflow inside a cold store is investigated using computational fluid dynamics. The airflow model is based on the steady state incompressible, Reynolds-averaged Navier-Stokes equations. The turbulence is taken into account using a k-epsilon (turbulence kinetic energy/turbulence energy dissipation) model. The standard as well as the Renormalisation-Group (RNG) version of the k-epsilon model is investigated. The forced-circulation air cooler unit is modelled with an appropriate body force and resistance, corresponding to the characteristics of the fan and the tube-bank evaporator. The finite volume method of discretisation is used. The validation of the model has been performed by a comparison of the calculated time-averaged velocity magnitudes with the mean velocities measured by means of a hot-film type omni-directional velocity sensor. A relative error on the calculated air velocities of 26% was observed. The RNG k-epsilon model does not help to improve the prediction of the recirculation. Both a finer grid and enhanced turbulence models are needed to improve the predictions.

Documents disponibles

Format PDF

Pages : 127-140

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Analysis of the air flow in a cold store by means of computational fluid dynamics.
  • Identifiant de la fiche : 2000-2694
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 23 - n. 2
  • Date d'édition : 03/2000

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