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Melting in a Rectangular Cavity

[+] Author Affiliations
Y. Kozak, G. Ziskind

Ben-Gurion University of the Negev, Beer-Sheva, Israel

Paper No. HT2016-7210, pp. V001T01A013; 6 pages
doi:10.1115/HT2016-7210
From:
  • ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamentals in Heat Transfer; Nanoscale Thermal Transport; Heat Transfer in Equipment; Heat Transfer in Fire and Combustion; Transport Processes in Fuel Cells and Heat Pipes; Boiling and Condensation in Macro, Micro and Nanosystems
  • Washington, DC, USA, July 10–14, 2016
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-5032-9
  • Copyright © 2016 by ASME

abstract

The present study deals with a new numerical approach for solid-liquid phase-change modeling. The new model is based on the enthalpy method and takes into account natural convection in the melt which can be coupled to the solid bulk sinking motion by the force balance on the solid bulk. A basic configuration is investigated, namely a two-dimensional rectangular cavity with a constant wall temperature. The effect of rather low values of the Archimedes and Rayleigh numbers on the sinking motion of the solid bulk, the melting rate and melting patterns, is explored. It is found that the density difference, between the solid and liquid phases, for the studied case does not affect considerably the results. However, it is shown that by natural convection alone the solid sinking motion is established, the melting rate is enhanced and the melting patterns are completely different in comparison with the first studied case.

Copyright © 2016 by ASME
Topics: Melting , Cavities

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