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dc.contributor.authorStribling, Troy
dc.contributor.authorMatthaeus, William H.
dc.contributor.authorOughton, Sean
dc.date.accessioned2014-04-03T22:31:11Z
dc.date.available2014-04-03T22:31:11Z
dc.date.copyright1995
dc.date.issued1995
dc.identifier.citationStribling, T., Matthaeus, W. H., & Oughton, S. (1995). Magnetic helicity in magnetohydrodynamic turbulence with a mean magnetic field. Physics of Plasmas, 2(5), 1437.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/8617
dc.description.abstractA computational investigation of magnetic helicity of the fluctuatingmagnetic fieldHm in ideal and freely decaying three‐dimensional (3‐D) magnetohydrodynamics (MHD) in the presence of a uniform mean magnetic field is performed. It is shown that for ideal 3‐D MHDHm, which is a rugged invariant in the absence of a mean magnetic field [Frisch et al., J. Fluid Mech. 77, 796 (1975)], decays from its initial value and proceeds to oscillate about zero. The decay of Hm is shown to result from the presence of a new ‘‘generalized’’ helicity invariant, which includes contributions from the uniform magnetic field. The loss of invariance of Hm will diminish the effects of inverse transfer of Hm on freely decaying turbulence. This is demonstrated in a discussion of the selective decay relaxation process.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherAmerican Institute of Physicsen_NZ
dc.relation.ispartofPhysics of Plasmas
dc.rights© 1995 American Institute of Physicsen_NZ
dc.titleMagnetic helicity in magnetohydrodynamic turbulence with a mean magnetic fielden_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1063/1.871359en_NZ


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