Turbulent magnetic Prandtl number and magnetic diffusivity quenching from simulations

Simple item page
dc.creatorYousef, T. A.
dc.creatorBrandenburg, A.
dc.creatorRüdiger, G.
dc.date2003-02-20
dc.date2004-02-02
dc.date.accessioned2026-07-07T02:07:41Z
dc.date.available2026-07-07T02:07:41Z
dc.descriptionForced turbulence simulations are used to determine the turbulent kinematic viscosity, nu_t, from the decay rate of a large scale velocity field. Likewise, the turbulent magnetic diffusivity, eta_t, is determined from the decay of a large scale magnetic field. In the kinematic regime, when the field is weak, the turbulent magnetic Prandtl number, nu_t/eta_t, is about unity. When the field is nonhelical, eta_t is quenched when magnetic and kinetic energies become comparable. For helical fields the quenching is stronger and can be described by a dynamical quenching formula.
dc.description7 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0302425
dc.identifierhttp://arxiv.org/abs/astro-ph/0302425
dc.identifierAstron.Astrophys. 411 (2003) 321-328
dc.identifierdoi:10.1051/0004-6361:20031371
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5774
dc.subjectAstrophysics
dc.titleTurbulent magnetic Prandtl number and magnetic diffusivity quenching from simulations
dc.typetext

Files

Collections

arXiv