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MELTING OF ICE IN A POROUS MEDIUM HEATED FROM BELOW.

Author(s) : ZHANG X., NGUYEN T. H.

Type of article: Article

Summary

THE PRIMARY CHARACTERISTICS OF THE MELTING PROCESS, IE THE ONSET OF CONVECTION, THE FLOW PATTERN IN THE MELT, THE HEAT TRANSFER RATE, AND THE INTERFACE POSITION, ARE STUDIED IN TERMS OF THE RAYLEIGH NUMBER, THE STEFAN NUMBER, THE ASPECT RATIO OF THE CAVITY, AND THE DENSITY INVERSION OF WATER. PRINCIPAL FINDINGS INDICATE THAT THE INITIAL CELLULAR PATTERN FORMED JUST AFTER THE ONSET OF CONVECTION PASSES THROUGH SEVERAL INTERMEDIATE FORMS IN ITS TRANSITION TO A FINAL STEADY STAE EACH CHANGE IN THE CONVECTION PATTERN IS ACCOMPANIED BY A SUDDEN INCREASE IN THE HEAT TRANSFERRATE AND IN THE DISPLACEMENT VELOCITY OF THE SOLID-LIQUID INTERFACE. A LOCAL MAXIMUM IN THE HEAT TRANSFER RATE IS EXHIBITED SHORTLY AFTER THE ESTABLISHMENT OF THE NEW CONVECTION PATTERN.

Details

  • Original title: MELTING OF ICE IN A POROUS MEDIUM HEATED FROM BELOW.
  • Record ID : 1992-0481
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 34 - n. 2
  • Publication date: 1991/02

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