Rapid directional alignment of velocity and magnetic field in magnetohydrodynamic turbulence

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dc.creatorMatthaeus, W. H.
dc.creatorPouquet, A.
dc.creatorMininni, P. D.
dc.creatorDmitruk, P.
dc.creatorBreech, B.
dc.date2007-08-06
dc.date.accessioned2026-07-07T11:18:27Z
dc.date.available2026-07-07T11:18:27Z
dc.descriptionWe show that local directional alignment of the velocity and magnetic field fluctuations occurs rapidly in magnetohydrodynamics for a variety of parameters. This is observed both in direct numerical simulations and in solar wind data. The phenomenon is due to an alignment between the magnetic field and either pressure gradients or shear-associated kinetic energy gradients. A similar alignment, of velocity and vorticity, occurs in the Navier Stokes fluid case. This may be the most rapid and robust relaxation process in turbulent flows, and leads to a local weakening of the nonlinear terms in the small scale vorticity and current structures where alignment takes place.
dc.description4 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0708.0801
dc.identifierhttp://arxiv.org/abs/0708.0801
dc.identifierPhys.Rev.Lett.100:085003,2008
dc.identifierdoi:10.1103/PhysRevLett.100.085003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193349
dc.subjectAstrophysics
dc.titleRapid directional alignment of velocity and magnetic field in magnetohydrodynamic turbulence
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