Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local Rheology Relation with Variable Yield Stress Ratio across Dry,
  Wet, Dense, and Dilute Granular Flows   Dry, wet, dense, and dilute granular flows have been previously considered
fundamentally different and thus described by distinct, and in many cases
incompatible, rheologies. We carry out extensive simulations of granular flows,
including wet and dry conditions, various geometries and driving mechanisms
(boundary driven, fluid driven, and gravity driven), many of which are not
captured by standard rheology models. For all simulated conditions, except for
fluid-driven and gravity-driven flows close to the flow threshold, we find that
the Mohr-Coulomb friction coefficient $\mu$ scales with the square root of the
local P\'eclet number $\mathrm{Pe}$ provided that the particle diameter exceeds
the particle mean free path. With decreasing $\mathrm{Pe}$ and granular
temperature gradient $M$, this general scaling breaks down, leading to a yield
condition with a variable yield stress ratio characterized by $M$.

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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: stat
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc