Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Assessment of a high-order shock-capturing central-difference scheme for
  hypersonic turbulent flow simulations   High-speed turbulent flows are encountered in most space-related applications
(including exploration, tourism and defense fields) and represent a subject of
growing interest in the last decades. A major challenge in performing
high-fidelity simulations of such flows resides in the stringent requirements
for the numerical schemes to be used. These must be robust enough to handle
strong, unsteady discontinuities, while ensuring low amounts of intrinsic
dissipation in smooth flow regions. Furthermore, the wide range of temporal and
spatial active scales leads to concurrent needs for numerical stabilization and
accurate representation of the smallest resolved flow scales in cases of
under-resolved configurations. In this paper, we present a finite-difference
high-order shock-capturing technique based on Jameson's artificial diffusivity
methodology. The resulting scheme is ninth-order-accurate far from
discontinuities and relies on the addition of artificial dissipation close to
large gradients. The shock detector is slightly revised to enhance its
selectivity and avoid spurious activations of the shock-capturing term. A suite
of test cases ranging from 1D to 3D configurations (namely, shock tubes,
Shu-Osher problem, isentropic vortex advection, under-expanded jet,
compressible Taylor-Green Vortex, supersonic and hypersonic turbulent boundary
layers) is analysed in order to test the capability of the proposed numerical
strategy to handle a large variety of problems, ranging from
calorically-perfect air to multi-species reactive flows. Results obtained on
under-resolved grids are also considered to test the applicability of the
proposed strategy in the context of implicit Large-Eddy Simulations.

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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
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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: q-alg
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The categories of this paper are: stat
1
The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th