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Numerical analysis of water melting and solidification in the interior of tubes

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Numerical analysis of water melting and solidification in the interior of tubes

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Título Numerical analysis of water melting and solidification in the interior of tubes
Autor Souza, Sandi Itamar Schafer de
Vielmo, Horacio Antonio
Abstract Latent energy storage systems find applications in many engineering fields, including industrial refrigeration plants, air conditioning installations, recovery of heat in industrial processes, etc. To tackle the design of such systems, it is necessary to have correlations to account for the heat transfer during the melting and solidification of the phase change material (PCM). This work describes and analyzes the results obtained from the numerical simulation of pure water melting and solidification in the interior of tubes, which are typically present in ice banks of air conditioning systems. The shown results consider natural convection, accounting for the inversion in the water density. In the melting process, the considered initial conditions followed the classical Stefan and Neumann approach. The presented simulation results include the evolution of the phase change interface, and of the temperature, density and streamlines fields. Correlations for the Nusselt number and for the melted material volume as functions of time have been proposed.
Contido em Journal of the Brazilian Society of Mechanical Sciences and Engineering. Vol. 27, No. 2 (apr./june 2005), p.119-131
Assunto Fenomenos de transporte
Simulação numérica
Solidificacao
Transferencia de calor
[en] Finite volumes
[en] Ice banks
[en] Melting and solidification
[en] Phase change
[en] Polar geometry
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/75782
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