Hydrodynamic and Magnetohydrodynamic Simulations of Wire Turbulence. (arXiv:1902.05063v1 [physics.flu-dyn])

Hydrodynamic and Magnetohydrodynamic Simulations of Wire Turbulence. (arXiv:1902.05063v1 [physics.flu-dyn])
<a href="http://arxiv.org/find/physics/1/au:+Fogerty_E/0/1/0/all/0/1">Erica Fogerty</a>, <a href="http://arxiv.org/find/physics/1/au:+Liu_B/0/1/0/all/0/1">Baowei Liu</a>, <a href="http://arxiv.org/find/physics/1/au:+Frank_A/0/1/0/all/0/1">Adam Frank</a>, <a href="http://arxiv.org/find/physics/1/au:+Carroll_Nellenback_J/0/1/0/all/0/1">Jonathan Carroll-Nellenback</a>, <a href="http://arxiv.org/find/physics/1/au:+Lebedev_S/0/1/0/all/0/1">Sergey Lebedev</a>

We report on simulations of laboratory experiments in which magnetized
supersonic flows are driven through a wire mesh. The goal of the study was to
investigate the ability of such a configuration to generate supersonic, MHD
turbulence. We first report on the morphological structures that develop in
both magnetized and non-magnetized cases. We then analyze the flow using a
variety of statistical measures, including power spectra and probability
distribution functions of the density. Using these results we estimate the
sonic mach number in the flows downstream of the wire mesh. We find the
initially hypersonic (M=20) planar shock through the wire mesh does lead to
downstream turbulent conditions. However, in both magnetized and non-magnetized
cases, the resultant turbulence was marginally supersonic to transonic (M~1),
and highly anisotropic in structure.

We report on simulations of laboratory experiments in which magnetized
supersonic flows are driven through a wire mesh. The goal of the study was to
investigate the ability of such a configuration to generate supersonic, MHD
turbulence. We first report on the morphological structures that develop in
both magnetized and non-magnetized cases. We then analyze the flow using a
variety of statistical measures, including power spectra and probability
distribution functions of the density. Using these results we estimate the
sonic mach number in the flows downstream of the wire mesh. We find the
initially hypersonic (M=20) planar shock through the wire mesh does lead to
downstream turbulent conditions. However, in both magnetized and non-magnetized
cases, the resultant turbulence was marginally supersonic to transonic (M~1),
and highly anisotropic in structure.

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