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Simulations par la mécanique numérique des fluides des transferts de chaleur magnétocaloriques entre une plaque de gadolinium et un écoulement oscillant de liquide.

CFD simulations of the magnetocaloric heat transfers between a gadolinium plate and an oscillating liquid flow.

Numéro : pap. 220

Auteurs : ROY J. C., LAROCHELAMBERT T. de, NIKA P., et al.

Résumé

This study deals with simulations of heat transfers between a 1 mm thick gadolinium plate submitted to a variable magnetic field and an oscillating liquid flow. The channel is connected to a cold thermal source (Tc = 290 K) and to a hot thermal source (Th = 295 K). The volume source term for the energy equation in the gadolinium plate is computed for each time step. Simulations were performed with the Fluent CFD code for a frequency f = 1Hz. The influence of the channel volume displacement was investigated. The evolution of the temperature distribution in the plate for different volume rates shows that the gradient reaches a maximum value in the plate for a volume rate displacement of 40%. This is confirmed by the determination of the enthalpy variation of the liquid located in the thermal source. Simulations for f = 2Hz clearly show the diminution of the enthalpy variations and consequently a sharp diminution of the possibility of heat transfer between the sources.

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Format PDF

Pages : 4 p.

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    20 €

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    Gratuit

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Détails

  • Titre original : CFD simulations of the magnetocaloric heat transfers between a gadolinium plate and an oscillating liquid flow.
  • Identifiant de la fiche : 30019331
  • Langues : Anglais
  • Source : 7th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VII). Proceedings: Turin, Italy, September 11-14, 2016.
  • Date d'édition : 11/09/2016
  • DOI : http://dx.doi.org/10.18462/iir.thermag.2016.0220

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