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Numerical analysis of a reciprocative active magnetic regenerator. I. Fluid flow and heat transfer modelling.

Author(s) : OLIVEIRA P. A., TREVIZOLI P. V., BARBOSA J. R. Jr, et al.

Summary

This is the first part of a paper devoted to an evaluation of the thermal behaviour of a magnetic-Brayton-based reciprocative AMR. A time-dependent, 2D model of the fluid flow and the coupled heat transfer between the working fluid and the solid refrigerant is proposed. A hybrid solution methodology has been adopted, which consists of an analytical solution of the flow and a numerical solution for the thermal field. The reciprocating velocity field in the regenerator was analyzed in terms of a kinetic Reynolds number. Results for the cooling capacity as a function of the temperature span and mass flow rate agree well with the trends observed in the experimental data and other theoretical models available in the literature (see also this Bulletin, reference 2009-1637).

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Pages: 2009-3

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Details

  • Original title: Numerical analysis of a reciprocative active magnetic regenerator. I. Fluid flow and heat transfer modelling.
  • Record ID : 2009-1587
  • Languages: English
  • Source: 3rd International Conference on Magnetic Refrigeration at Room Temperature
  • Publication date: 2009/05/11

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