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Modélisation par la méthode des volumes finis de la solidification de l’eau dans des bacs à glaçons : nouvelle formulation enthalpique.

Numerical simulation of water solidification in square ice trays: A simplified enthalpic formulation.

Numéro : pap. n. 78

Auteurs : LOYOLA F. R., BARBOZA L., HERMES C. J. L.

Résumé

Water solidification inside hermetic two-dimensional rectangular cavities is modelled and simulated in the present work aiming at household ice making. A new enthalpic formulation based upon the first-principles of mass, energy and momentum conservation together with the definition of the liquid fraction was developed to track the mushy region interface, where the phase change takes place. The proposed methodology was verified against a classic analytical solution for phase change problems with the numerical predictions following closely the theoretical trends. Finally, household ice making through ice trays is assessed to figure out not only the time required for complete solidification, but also the amount of energy removed in the process. It was observed an increase in the production rate by 35% when a plastic tray is replaced by a thin metal one.

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Pages : 8

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Détails

  • Titre original : Numerical simulation of water solidification in square ice trays: A simplified enthalpic formulation.
  • Identifiant de la fiche : 30025955
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0078

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