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Modeling of Ice-Water Phase Change in Horizontal Annulus Using Modified Enthalpy Method

Published online by Cambridge University Press:  03 June 2015

Esad Tombarević*
Affiliation:
Faculty of Mechanical Engineering, University of Montenegro, Cetinjski put bb, 81000 Podgorica, Montenegro
Igor Vušanović*
Affiliation:
Faculty of Mechanical Engineering, University of Montenegro, Cetinjski put bb, 81000 Podgorica, Montenegro
*
Corresponding author. Email: esadt@ac.me
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Abstract

Phase change in ice-water systems in the geometry of horizontal cylindrical annulus with constant inner wall temperature and adiabatic outer wall is modeled with an enthalpy-based mixture model. Solidification and melting phenomena under different temperature conditions are analyzed through a sequence of numerical calculations. In the case of freezing of water, the importance of convection and conduction as well as the influence of cold pipe temperature on time for the complete solidification are examined. As for the case of melting of ice, the influence of the inner pipe wall temperature on the shape of the ice-water interface, the flow and temperature fields in the liquid, the heat transfer coefficients and the rate of melting are analyzed. The results of numerical calculations point to good qualitative agreement with the available experimental and other numerical results.

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Type
Research Article
Copyright
Copyright © Global-Science Press 2011

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