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Modélisation et simulation numérique des changements de phase à haute pression induits par convection.

Modelling and numerical simulation of convection-driven high pressure induced phase changes.

Auteurs : KOWALCZYK W., HARTMANN C., DELGADO A.

Type d'article : Article

Résumé

High pressure induced freezing and thawing processes were investigated by means of modelling and numerical simulation. The enthalpy-porosity model is reformulated in terms of conservation equations of mass, momentum and heat for a compressible medium. It was shown that convective fluid motion has a major influence on the formation of the ice front. Furthermore, due to a vanishing density anomaly under high pressure, natural convection exhibits a different behaviour than under low pressure; thus the formation of the ice front under high pressure obeys mechanisms other than that under ambient pressure.

Détails

  • Titre original : Modelling and numerical simulation of convection-driven high pressure induced phase changes.
  • Identifiant de la fiche : 2004-1776
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 5
  • Date d'édition : 02/2004

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