Show simple item record  

dc.contributor.authorHossain, Murshed
dc.contributor.authorGray, Perry C.
dc.contributor.authorPontius, Duane H.
dc.contributor.authorMatthaeus, William H.
dc.contributor.authorOughton, Sean
dc.date.accessioned2014-04-03T22:36:47Z
dc.date.available2014-04-03T22:36:47Z
dc.date.copyright1995
dc.date.issued1995
dc.identifier.citationHossain, M., Gray, P. C., Pontius, D. H., Matthaeus, W. H., & Oughton, S. (1995). Phenomenology for the decay of energy-containing eddies in homogeneous MHD turbulence. Physics of Fluids, 7(11), 2886.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/8618
dc.description.abstractWe evaluate a number of simple, one‐point phenomenological models for the decay of energy‐containing eddies in magnetohydrodynamic(MHD) and hydrodynamicturbulence. The MHDmodels include effects of cross helicity and Alfvénic couplings associated with a constant mean magnetic field, based on physical effects well‐described in the literature. The analytic structure of three separate MHDmodels is discussed. The single hydrodynamic model and several MHDmodels are compared against results from spectral‐method simulations. The hydrodynamic model phenomenology has been previously verified against experiments in wind tunnels, and certain experimentally determined parameters in the model are satisfactorily reproduced by the present simulation. This agreement supports the suitability of our numerical calculations for examining MHDturbulence, where practical difficulties make it more difficult to study physical examples. When the triple‐decorrelation time and effects of spectral anisotropy are properly taken into account, particular MHDmodels give decay rates that remain correct to within a factor of 2 for several energy‐halving times. A simple model of this type is likely to be useful in a number of applications in space physics, astrophysics, and laboratory plasma physics where the approximate effects of turbulence need to be included.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherAmerican Institute of Physicsen_NZ
dc.relation.ispartofPhys. Fluids
dc.rights© 1995 American Institute of Physicsen_NZ
dc.subjectmagnetohydrodynamics (MHD)en_NZ
dc.subjectturbulenceen_NZ
dc.titlePhenomenology for the decay of energy-containing eddies in homogeneous MHD turbulenceen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1063/1.868665en_NZ


Files in this item

This item appears in the following Collection(s)

Show simple item record