Numerical study for enhancement of solidification of phase change materials using trapezoidal cavity

R. K. Sharma, P. Ganesan, J. N. Sahu, H. S.C. Metselaar, T.m. Indra Mahlia

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

This paper reports the results of a numerical study on the heat transfer during process of conduction dominated solidification of copper-water nanofluid in isosceles trapezoidal cavity under controlled temperature and concentration gradients. The suspended nanoparticles have proven to increase the heat transfer rate substantially. The horizontal walls of the cavities are insulated while side walls are kept at constant but different temperatures. The total solidification time of pure fluid and nanofluid filled in the cavity is investigated for three different inclinations of side walls and the results are compared with square cavity. Results revealed that the total solidification time for pure fluid as well for nanofluid for all nano particle concentrations decreases. The effects of Grashof number (105-107) on the heat transfer phenomenon and solid-liquid interface are also numerically investigated and presented graphically. The enthalpy-porosity technique is used to trace the solid-liquid interface. Inclination angle can be used efficiently to control the solidification time. In addition, average Nusselt number along the hot wall for different angles, nanoparticles volume fractions, and Grashof number is presented graphically. The proposed predictions are very helpful in developing improved latent heat thermal energy storage for solar heat collector and for casting and mold design.

Original languageEnglish
Pages (from-to)38-47
Number of pages10
JournalPowder Technology
Volume268
DOIs
Publication statusPublished - 01 Jan 2014

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Phase change materials
Solidification
Grashof number
Heat transfer
Nanoparticles
Fluids
Latent heat
Liquids
Nusselt number
Thermal energy
Energy storage
Copper
Enthalpy
Volume fraction
Casting
Porosity
Temperature
Water

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

Sharma, R. K. ; Ganesan, P. ; Sahu, J. N. ; Metselaar, H. S.C. ; Mahlia, T.m. Indra. / Numerical study for enhancement of solidification of phase change materials using trapezoidal cavity. In: Powder Technology. 2014 ; Vol. 268. pp. 38-47.
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Numerical study for enhancement of solidification of phase change materials using trapezoidal cavity. / Sharma, R. K.; Ganesan, P.; Sahu, J. N.; Metselaar, H. S.C.; Mahlia, T.m. Indra.

In: Powder Technology, Vol. 268, 01.01.2014, p. 38-47.

Research output: Contribution to journalArticle

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