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Document IIF

Nucléation de l'eau en surfusion sur les surfaces solides.

Nucleation of supercooled water on solid surfaces.

Auteurs : OKAWA S., SAITO A., MATSUI T.

Type d'article : Article, Article de la RIF

Résumé

Heterogeneous nucleation of water is investigated using molecular dynamics simulation. The interaction between water and the solid is based on the equations proposed by Spohr. Exception is made on the lattice constant which is slightly modified to fit with that for ice structure. The shape of the solid surface is considered. It is found that the only one layer of water molecules is adsorbed in a case of a flat surface, whereas ice nucleation occurs by removing some of the atoms from the surface. Spohr's interaction is also modified so that the dipole moment of water became anti-ferroelectric. It is found that the modification increased the ice growth further. The effect of lattice constant of solid on nucleation is also investigated. It is found that the variation on lattice constant with a few percent from that of ice is acceptable for nucleation, especially on shrinking side. On the expanding side, however, it gives some gaps for water molecules to fit in other than that for the ice structure, and it prevents the growth of ice. Hence, a guideline for the selection of ice nucleus material is obtained.

Documents disponibles

Format PDF

Pages : 134-141

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Nucleation of supercooled water on solid surfaces.
  • Identifiant de la fiche : 2006-0519
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 1
  • Date d'édition : 01/2006

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