Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intermittency in the Enstrophy Cascade of Two-dimensional
  Fully-developed Turbulence: Universal Features   Intermittency (externally induced) in the two-dimensional (2D) enstrophy
cascade is shown to be able to maintain a finite enstrophy along with a
vorticity conservation anomaly. Intermittency mechanisms of three-dimensional
(3D) energy cascade and 2D enstrophy cascade in fully-developed turbulence
(FDT) seem to have some universal features. The parabolic-profile approximation
(PPA) for the singularity spectrum f(a) in multi-fractal model is used and
extended to the appropriate microscale regimes to exhibit these features. The
PPA is also shown to afford, unlike the generic multi-fractal model, an
analytical calculation of probability distribution functions (PDF) of
flow-variable gradients in these FDT cases and to describe intermittency
corrections that complement those provided by the homogeneous fractal model.

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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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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: chem-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: solv-int