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

Number: pap. 220

Author(s) : ROY J. C., LAROCHELAMBERT T. de, NIKA P., et al.

Summary

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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Pages: 4 p.

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Details

  • Original title: CFD simulations of the magnetocaloric heat transfers between a gadolinium plate and an oscillating liquid flow.
  • Record ID : 30019331
  • Languages: English
  • Source: 7th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VII). Proceedings: Turin, Italy, September 11-14, 2016.
  • Publication date: 2016/09/11
  • DOI: http://dx.doi.org/10.18462/iir.thermag.2016.0220

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