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ANALYTICAL STUDY OF VACUUM-SUBLIMATION IN AN INITIALLY PARTIALLY FILLED FROZEN POROUS MEDIUM WITH RECONDENSATION.

Author(s) : FEY Y. C., BOLES M. A.

Type of article: Article

Summary

ANALYTICAL SOLUTIONS ARE DEVELOPED FOR VACUUM-SUBLIMATION IN AN INITIALLY PARTIALLY FILLED, FROZEN, SEMI-INFINITE POROUS MEDIUM. SINCE THE POROUS MEDIUM IS PARTIALLY FILLED, THE VAPOUR GENERATED AT THE SUBLIMATION INTERFACE WILL MOVE BY CONVECTION INTO BOTH THE DRIED AND FROZEN REGIONS. THE MASS TRANSFER OF VAPOUR THROUGH THE MEDIUM IS MODELLED BY THE APPLICATION OF DARCY'S AND FICK'S LAWS. RECONDENSATION OCCURS WHEN THE VAPOUR MOVES INTO THE FROZEN REGION. THE EFFECTS OF RECONDENSATION AND THE SIGNIFICANT SYSTEM PARAMETERS ON THE NON-DIMENSIONAL INTERFACE POSITION ARE STUDIED. THE RESULTS SHOW THE INCREASED SUBLIMATION RATE WHEN THE VAPOUR RECONDENSES.

Details

  • Original title: ANALYTICAL STUDY OF VACUUM-SUBLIMATION IN AN INITIALLY PARTIALLY FILLED FROZEN POROUS MEDIUM WITH RECONDENSATION.
  • Record ID : 1989-0873
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 31 - n. 8
  • Publication date: 1988

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