Article | Proceedings of The 59th Conference on Simulation and Modelling (SIMS 59), 26-28 September 2018, Oslo Metropolitan University, Norway | Convective Melting Modeling Approach for Phase Change Materials with Variable Boundary Heating Link�ping University Electronic Press Conference Proceedings
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Title:
Convective Melting Modeling Approach for Phase Change Materials with Variable Boundary Heating
Author:
Donato Rubinetti: Institute of Thermal- and Fluid-Engineering, University of Applied Sciences and Arts Northwestern Switzerland, Switzerland Daniel A. Weiss: Institute of Thermal- and Fluid-Engineering, University of Applied Sciences and Arts Northwestern Switzerland, Switzerland Arnab Chaudhuri: Department of Civil Engineering and Energy Technology, OsloMet — Oslo Metropolitan University, Norway Dimitrios Kraniotis: Department of Civil Engineering and Energy Technology, OsloMet — Oslo Metropolitan University, Norway
DOI:
10.3384/ecp18153103
Download:
Full text (pdf)
Year:
2018
Conference:
Proceedings of The 59th Conference on Simulation and Modelling (SIMS 59), 26-28 September 2018, Oslo Metropolitan University, Norway
Issue:
153
Article no.:
015
Pages:
103-110
No. of pages:
8
Publication type:
Abstract and Fulltext
Published:
2018-11-19
ISBN:
978-91-7685-494-5
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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The present study conceives a numerical model for phase change materials following the apparent heat capacity method where the phase change occurs within a chosen temperature interval. A multiphysical modeling approach to satisfy the coupled momentum, energy and continuity conservation equations whilst avoiding numerical singularities is applied. By means of a 2D test-case geometry with variable boundary heating the influence of natural convection within the melted liquid zone is visualized. Corresponding non-dimensional governing equations are analysed to quantify the dominant contributing terms. It turns out that for sufficiently small Grashof number, or consequently small Rayleigh numbers the influence of natural convection can be neglected, thus simplyfing the problem substantially. The modeling approach has been adapted to a 2D-axisymmetric geometry within the scope of experimental validation. The simulation results and experimental data show reasonably good agreement. The model is numerically stable and suitable to facilitate design of latent heat storage systems.

Keywords: Phase Change Materials, Fluid Flow, Heat Transfer, Phase Transition, Natural Convection, Melting, Latent Heat Storage

Proceedings of The 59th Conference on Simulation and Modelling (SIMS 59), 26-28 September 2018, Oslo Metropolitan University, Norway

Author:
Donato Rubinetti, Daniel A. Weiss, Arnab Chaudhuri, Dimitrios Kraniotis
Title:
Convective Melting Modeling Approach for Phase Change Materials with Variable Boundary Heating
DOI:
http://dx.doi.org/10.3384/ecp18153103
References:
No references available

Proceedings of The 59th Conference on Simulation and Modelling (SIMS 59), 26-28 September 2018, Oslo Metropolitan University, Norway

Author:
Donato Rubinetti, Daniel A. Weiss, Arnab Chaudhuri, Dimitrios Kraniotis
Title:
Convective Melting Modeling Approach for Phase Change Materials with Variable Boundary Heating
DOI:
http://dx.doi.org/10.3384/ecp18153103
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Last updated: 2018-9-11