Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shear mixing in stellar radiative zones - II. Robustness of numerical
  simulations   Recent numerical simulations suggest that the model by Zahn (1992, A&A, 265,
115) for the turbulent mixing of chemical elements due to differential rotation
in stellar radiative zones is valid.
  We investigate the robustness of this result with respect to the numerical
configuration and Reynolds number of the flow.
  We compare results from simulations performed with two different numerical
codes, including one that uses the shearing-box formalism. We also extensively
study the dependence of the turbulent diffusion coefficient on the turbulent
Reynolds number.
  The two numerical codes used in this study give consistent results. The
turbulent diffusion coefficient is independent of the size of the numerical
domain if at least three large turbulent structures fit in the box. Generally,
the turbulent diffusion coefficient depends on the turbulent Reynolds number.
However, our simulations suggest that an asymptotic regime is obtained when the
turbulent Reynolds number is larger than $10^3$.
  Shear mixing in the regime of small P\'eclet numbers can be investigated
numerically both with shearing-box simulations and simulations using explicit
forcing. Our results suggest that Zahn's model is valid at large turbulent
Reynolds numbers.

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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
3
The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg