Role of cross helicity in magnetohydrodynamic turbulence

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dc.creatorPerez, Jean C
dc.creatorBoldyrev, Stanislav
dc.date2008-07-16
dc.date2009-01-16
dc.date.accessioned2026-07-07T12:30:12Z
dc.date.available2026-07-07T12:30:12Z
dc.descriptionStrong incompressible three-dimensional magnetohydrodynamic turbulence is investigated by means of high resolution direct numerical simulations. The simulations show that the configuration space is characterized by regions of positive and negative cross-helicity, corresponding to highly aligned or anti-aligned velocity and magnetic field fluctuations, even when the average cross-helicity is zero. To elucidate the role of cross-helicity, the spectra and structure of turbulence are obtained in imbalanced regions where cross-helicity is non-zero. When averaged over regions of positive and negative cross-helicity, the result is consistent with the simulations of balanced turbulence. An analytical explanation for the obtained results is proposed.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0807.2635
dc.identifierhttp://arxiv.org/abs/0807.2635
dc.identifierPhysical Review Letters, 102, 025003 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.025003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216063
dc.subjectAstrophysics
dc.subjectFluid Dynamics
dc.subjectPlasma Physics
dc.titleRole of cross helicity in magnetohydrodynamic turbulence
dc.typetext

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