Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The influence of the magnetic field on the performance of an active
  magnetic regenerator (AMR)   The influence of the time variation of the magnetic field, termed the
magnetic field profile, on the performance of a magnetocaloric refrigeration
device using the active magnetic regeneration (AMR) cycle is studied for a
number of process parameters for both a parallel plate and packed bed
regenerator using a numerical model. The cooling curve of the AMR is shown to
be almost linear far from the Curie temperature of the magnetocaloric material.
It is shown that a magnetic field profile that is 10% of the cycle time out of
sync with the flow profile leads to a drop in both the maximum temperature span
and the maximum cooling capacity of 20-40\% for both parallel plate and packed
bed regenerators. The maximum cooling capacity is shown to depend very weakly
on the ramp rate of the magnetic field. Reducing the temporal width of the high
field portion of the magnetic field profile by 10% leads to a drop in maximum
temperature span and maximum cooling capacity of 5-20%. An increase of the
magnetic field from 1 T to 1.5 T increases the maximum cooling capacity by
30-50% but the maximum temperature span by only 20-30%. Finally, it was seen
that the influence of changing the magnetic field was more or less the same for
the different regenerator geometries and operating parameters studied here.
This means that the design of the magnet can be done independently of the
regenerator geometry.

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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph