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Document IIF

Modélisation et calcul par dynamique des fluides pour le transfert de chaleur et d'humidité lors de la réfrigération de boeuf.

A computational fluid dynamic model of the heat and moisture transfer during beef chilling.

Auteurs : TRUJILLO F. J., PHAM Q. T.

Type d'article : Article, Article de la RIF

Résumé

The unsteady heat and mass transfer process during beef carcass chilling was modelled for a three-dimensional beef carcassgeometry. A three-step method was used to simulate the simultaneous heat and mass transfer process in order to reduce the computationaltime. In the first step, a steady state simulation of the flow field was conducted. In the second step, the local heat and mass transfer coefficients were calculated. Finally, the third step consists of the simultaneous heat and mass transfer process simulation on the meat carcass only. A separate 1-D grid was used to calculate the moisture diffusion in the meat. The simulation of a 20-h chilling run takes 5 days on a 2.5 GHz Pentium 4 computer. The model allows calculating and predicting the heat load, temperatures, weight loss and water activity. Local variations in the heat and mass transfer coefficients, temperature and water activity were found around the beef carcass. The CFD model gives temperature predictions that agree with experimental data better than any previous model. The weight loss tends to be over-predicted probably due to neglecting the resistance caused by the fat cover.

Documents disponibles

Format PDF

Pages : 998-1009

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : A computational fluid dynamic model of the heat and moisture transfer during beef chilling.
  • Identifiant de la fiche : 2006-2499
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 6
  • Date d'édition : 09/2006

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