An experimental investigation of the melting process in a rectangular enclosure

Wang, Y.; Amiri, A.; Vafai, Kambiz

doi:10.1016/s0017-9310(99)00024-1

Cited by 115 publications

(36 citation statements)

References 13 publications

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“…Therefore the convection of heat through the frozen region is one of the main mechanisms of heat transfer in such systems. In this regard this model is different from the classical works studying the melting of frozen porous media [1][2][3] or the melting cavities [4,5] in which conduction and natural convection are responsible for the heat transfer to the boundaries of the frozen region.…”

Section: Introductionmentioning

confidence: 85%

Heat and mass transfer in melting porous media: Stable miscible displacements

Sajjadi

Azaiez

2015

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 85%

Heat and mass transfer in melting porous media: Stable miscible displacements

Sajjadi

Azaiez

2015

International Journal of Heat and Mass Transfer

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“…Experiments are conducted to further investigate the introduced model. Figure 8 illustrates the schematic of the experimental setup adapted from [11,22,26]. The domain consists of a square enclosure with inside dimensions of 50 mm × 50 mm × 50 mm made of Plexiglas.…”

Section: Methodsmentioning

confidence: 99%

Solid-Liquid Phase Change in the Presence of Gas Phase: Numerical Modeling and Validation

Kewalramani¹,

Pose²,

Riehl³

et al. 2020

JFFHMT

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In the present work a fundamental numerical model is implemented in the open source framework, finite volume method (FVM) based computational fluid dynamics (CFD) program OpenFOAM®, to tackle the solid-liquid phase change phenomena in the presence of gas phase. The volume of fluid (VoF) method is employed to distinguish between the phase change material (PCM) and the gas phase, and the enthalpyporosity method is adopted to capture the moving boundary phase change phenomena in the PCM. The discussed model is validated against the well documented cases in the literature i.e., 1D Stefan problem, melting of gallium and free surface thermocapillary flow with phase change. The simulation results are in very good agreement with those found in the literature. Finally, experiments are performed with partially filled paraffin wax (Rubitherm® RT31) in the presence of air in an enclosure. The left and right walls of the enclosure are made of aluminum plates and maintained at different temperatures while the remaining walls are made of Plexiglas. The temporal evolution of the melting front during melting obtained from the discussed numerical model is compared with experiments.

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“…They noted all the melting rate, melting front profiles and melting heat transfer are greatly affected by buoyancydriven nature convection. Wang et al [9] conducted an experimental investigation on melting of the PEG 900 in a rectangular cavity with a vertical heating wall. Some empirical correlations for the volume fraction and time-averaged Nu were derived from the experimental data.…”

Section: Introductionmentioning

confidence: 99%

A comparison study on melting inside the rectangular and curved unit with a vertical heating wall

Gao

et al. 2015

J Therm Anal Calorim

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Efficient and rational use of thermal energy requires the design and development of suitable and costeffective latent heat storage systems. In this study, a novel curved thermal storage unit is put forward and its thermal behavior has been numerically compared with the traditional rectangular PCM-based thermal storage unit. The solid-liquid interface evolution, liquid flow pattern and temperature distribution are presented. Transient Nu at the heating wall and full melting time are also calculated. The numerical results show the high impact of the enclosure geometry on melting and nature convection. A reduction of 30.6 % in thermal storage time has been achieved by changing the unit from rectangular to curve. Moreover, parametric studies are conducted to assess how thermal performance of the units is affected by the heating wall temperature and PCM thermal conductivity. Correlations encompassing a wide range of parameters are developed in terms of full melting time. Results indicate that proportion of full melting time reduced for the curved unit is almost a constant value and does not vary significantly with these factors. All these may be very helpful for the design of more efficient thermal storage units.

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An experimental investigation of the melting process in a rectangular enclosure

Cited by 115 publications

References 13 publications

Heat and mass transfer in melting porous media: Stable miscible displacements

Heat and mass transfer in melting porous media: Stable miscible displacements

Solid-Liquid Phase Change in the Presence of Gas Phase: Numerical Modeling and Validation

A comparison study on melting inside the rectangular and curved unit with a vertical heating wall

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