2019
DOI: 10.3390/app9204334
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Fixed Grid Numerical Models for Solidification and Melting of Phase Change Materials (PCMs)

Abstract: Phase change materials (PCMs) are classified according to their phase change process, temperature, and composition. The utilization of PCMs lies mainly in the field of solar energy and building applications as well as in industrial processes. The main advantage of such materials is the use of latent heat, which allows the storage of a large amount of thermal energy with small temperature variation, improving the energy efficiency of the system. The study of PCMs using computational fluid dynamics (CFD) is wide… Show more

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Cited by 36 publications
(11 citation statements)
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“…Examples include, glacier dynamics (Aschwanden et al, 2012), snow pack evolution (Brun et al, 1992;Lehning et al, 1999), and magma bodies (De Lorenzo et al, 2006). This may be even further expanded to industrial problems involving phase change materials used in energy recovery systems (Mongibello et al, 2018;Nazzi Ehms et al, 2019) or casting problems of pure metals and alloys (Lewis and Ravindran, 2000).…”
Section: Discussionmentioning
confidence: 99%
“…Examples include, glacier dynamics (Aschwanden et al, 2012), snow pack evolution (Brun et al, 1992;Lehning et al, 1999), and magma bodies (De Lorenzo et al, 2006). This may be even further expanded to industrial problems involving phase change materials used in energy recovery systems (Mongibello et al, 2018;Nazzi Ehms et al, 2019) or casting problems of pure metals and alloys (Lewis and Ravindran, 2000).…”
Section: Discussionmentioning
confidence: 99%
“…EnergyPlus ® is highly accredited as a software with the capability to simulate PCMs. Nevertheless, several different approaches to simulate the melting and solidification process have been widespread and can be consulted in [42].…”
Section: Methodsmentioning
confidence: 99%
“…To model free convection, the momentum equations should be considered together with the energy balance. There are numerous numerical approaches modeling latent heat and the velocity transitions between solid (ice) and liquid (water) phases which can be classified as: 1) source term methods, 2) enthalpy methods and, 3) temperature-transforming models (Nazzi Ehms et al, 2019). Similarly, to illustrate the transition in velocity between the solid and liquid phase in momentum equations, three main groups of methods exist: 1) switch-off methods, 2) source term methods and, 3) variable viscosity methods and there are further subcategories which can differ in their details (Nazzi Ehms et al, 2019;Caggiano et al, 2018).…”
Section: Computational Domain and Governing Equationsmentioning
confidence: 99%
“…There are numerous numerical approaches modeling latent heat and the velocity transitions between solid (ice) and liquid (water) phases which can be classified as: 1) source term methods, 2) enthalpy methods and, 3) temperature-transforming models (Nazzi Ehms et al, 2019). Similarly, to illustrate the transition in velocity between the solid and liquid phase in momentum equations, three main groups of methods exist: 1) switch-off methods, 2) source term methods and, 3) variable viscosity methods and there are further subcategories which can differ in their details (Nazzi Ehms et al, 2019;Caggiano et al, 2018). In principle, any combination of two methods is applicable but, in this study, temperature-transforming models as well as source term methods are selected for modeling velocity transition and latent heat, respectively (Neda and Nazif, 2020).…”
Section: Computational Domain and Governing Equationsmentioning
confidence: 99%