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Effet des bulles d'air sur la solidification régulée par diffusion d'eau et des solutions aqueuses de chlorure d'ammonium.

The effect of air bubbles on the diffusion-controlled solidification of water and aqueous solutions of ammonium chloride.

Auteurs : BIANCHI M. V. A., VISKANTA R.

Type d'article : Article

Résumé

Gas pores appear during solidification when the gas concentration in the liquid is higher than the gas solubility at a certain location. Since the thermal conductivity on the gas can be orders of magnitude lower than that of the solid phases, the effective thermal conductivity of the porous solid may be lower when gas bubbles are present. In the study, experiments have been carried out to determine the effect of air bubbles on the process of solidification and solid formation. Water and ammonium chloride solutions have been solidified under diffusion controlled conditions and the temperature distributions as well as the interface positions have been measured during the experiments.

Détails

  • Titre original : The effect of air bubbles on the diffusion-controlled solidification of water and aqueous solutions of ammonium chloride.
  • Identifiant de la fiche : 2000-0646
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 42 - n. 6
  • Date d'édition : 03/1999

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