Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterizing the Rheology of Fluidized Granular Matter   In this study we characterize the rheology of fluidized granular matter
subject to secondary forcing. Our approach consists of first fluidizing
granular matter in a drum half filled with grains via simple rotation, and then
superimposing oscillatory shear perpendicular to the downhill flow direction.
The response of the system is mostly linear, with a phase lag between the grain
motion and the oscillatory forcing. The rheology of the system can be well
characterize by the GDR-Midi model if the system is forced with slow
oscillations. The model breaks down when the forcing timescale becomes
comparable to characteristic time for energy dissipation in the flow.

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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an