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NATURAL CONVECTION MELTING OF A FROZEN POROUS MEDIUM.

Author(s) : CHELLAIAH S., VISKANTA R.

Type of article: Article

Summary

MELTING OF AN ICE-POROUS MEDIA (GLASS BEADS) SYSTEM CONTAINED IN A RECTANGULAR TEST CELL HAS BEEN STUDIED BOTH EXPERIMENTALLY AND NUMERICALLY IN ORDER TO EXAMINE THE EFFECTS OF NATURAL CONVECTION AND DENSITY INVERSION OF WATER IN THE MELT REGION. WHEN THE SUPERHEAT ACROSS THE LIQUID REGION IS SMALL THE FLOW IN THE POROUS MEDIA IS WEAK AND THE INTERFACE IS ALMOST PL FOR LARGER SUPERHEATS, THE STRENGTH OF NATURAL CONVECTION FLOW, THE INTERFACE VELOCITY AND SHAPE ARE ALL FOUND TO DEPEND ON THE IMPOSED TEMPERATURE DIFFERENCE AND THE PERMEABILITY OF THE POROUS MEDIUM. THE EFFECT OF DENSITY INVERSION OF WATER ON THE FLUID FLOW AND HEAT TRANSFER IS MODELLED. REASONABLY GOOD AGREEMENT IS FOUND BETWEEN THE EXPERIMENTAL DATA AND NUMERICAL PREDICTIONS.

Details

  • Original title: NATURAL CONVECTION MELTING OF A FROZEN POROUS MEDIUM.
  • Record ID : 1991-0114
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 33 - n. 5
  • Publication date: 1990/05

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