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ISSN Online: 2688-7231

ISBN Online: 978-1-56700-524-0

Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
December, 17-20, 2021, IIT Madras, Chennai, India

Numerical investigation on melting and heat transfer characteristics of phase change material in a parallelogram enclosure

Get access (open in a dialog) DOI: 10.1615/IHMTC-2021.3670
pages 2427-2434

Resumo

In this paper, two-dimensional numerical simulations have been carried out in ANSYS Fluent to understand the melting and heat transfer characteristics of phase change material (PCM) kept inside parallelogram shaped enclosure. The results include evolution of solid liquid interface, melt fraction variation with time, averaged PCM temperature, averaged solid PCM temperature, averaged liquid PCM temperature, sensible heat absorbed, latent heat absorbed, total heat absorbed, variation of surface averaged Nusselt number, and time variation of maximum liquid velocity etc. The results are compared with the results of rectangular shaped enclosure. The results indicate that total time for complete melting of the PCM for parallelogram enclosure is considerably less as compared to that for rectangular enclosure. This can be attributed to enhanced strength of gravity assisted natural convection currents in liquid PCM as evident by increase in maximum velocity of liquid PCM in parallelogram enclosure. Higher value of Nusselt number for parallelogram enclosure depicts an enhanced heat transfer. The results so obtained will be useful in understanding the influence of geometry on passive manipulation of melting and heat transfer characteristics of PCM for thermal storage and thermal management applications.