Experimental and numerical study of melting of the phase change material tetracosane

Santiago Madruga, Naoto Haruki, Akihiko Horibe

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We carry out a comparative analysis of experimental results and numerical simulations on the melting of the Phase Change Material tetracosane contained within a cube and heated from below. Simulations employ a Stefan number Ste = 0.65, Prandtl number Pr = 54, and Rayleigh number covers a range up to 108. The simulations show distinct regimes of the melting process: (i) conductive regime, (ii) stable growth regime, (iii) coarsening regime, (iv) turbulent regime. We show how the solid/liquid interface easily observed in the experiment is enough to identify these regimes and so the internal state of the velocity and temperature fields.

Original languageEnglish
Pages (from-to)163-170
Number of pages8
JournalInternational Communications in Heat and Mass Transfer
Volume98
DOIs
Publication statusPublished - Nov 1 2018

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phase change materials
Phase change materials
Melting
melting
Prandtl number
Coarsening
Temperature distribution
simulation
liquid-solid interfaces
Rayleigh number
Computer simulation
Liquids
temperature distribution
velocity distribution
Experiments
tetracosane

Keywords

  • Energy storage
  • Melting
  • Natural convection
  • Phase change material
  • Tetracosane

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Chemical Engineering(all)
  • Condensed Matter Physics

Cite this

Experimental and numerical study of melting of the phase change material tetracosane. / Madruga, Santiago; Haruki, Naoto; Horibe, Akihiko.

In: International Communications in Heat and Mass Transfer, Vol. 98, 01.11.2018, p. 163-170.

Research output: Contribution to journalArticle

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AB - We carry out a comparative analysis of experimental results and numerical simulations on the melting of the Phase Change Material tetracosane contained within a cube and heated from below. Simulations employ a Stefan number Ste = 0.65, Prandtl number Pr = 54, and Rayleigh number covers a range up to 108. The simulations show distinct regimes of the melting process: (i) conductive regime, (ii) stable growth regime, (iii) coarsening regime, (iv) turbulent regime. We show how the solid/liquid interface easily observed in the experiment is enough to identify these regimes and so the internal state of the velocity and temperature fields.

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