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dc.contributor.authorKube, Ralph
dc.contributor.authorWiesenberger, Matthias
dc.contributor.authorGarcia, Odd Erik
dc.date.accessioned2017-01-24T12:31:00Z
dc.date.available2017-01-24T12:31:00Z
dc.date.issued2016-12-07
dc.description.abstractThe interchange dynamics and velocity scaling of blob-like plasma filaments are investigated using a two-field reduced fluid model. For incompressible flows due to buoyancy, the maximum velocity is proportional to the square root of the relative amplitude and the square root of its cross-field size. For compressible flows in a non-uniform magnetic field, this square root scaling only holds for ratios of amplitudes to cross-field sizes above a certain threshold value. For small amplitudes and large sizes, the maximum velocity is proportional to the filament amplitude. The acceleration is proportional to the amplitude and independent of the cross-field size in all regimes. This is demonstrated by means of numerical simulations and explained by the energy integrals satisfied by the model.en_US
dc.descriptionThis article is also published online at <a href="http://dx.doi.org/10.1063/1.4971220">http://dx.doi.org/10.1063/1.4971220</a>en_US
dc.identifier.citationPhysics of Plasmas (2016), 23, 122302en_US
dc.identifier.cristinIDFRIDAID 1414969
dc.identifier.doi10.1063/1.4971220
dc.identifier.issn1089-7674
dc.identifier.issn1070-664X
dc.identifier.urihttps://hdl.handle.net/10037/10210
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430en_US
dc.subjectPlasma blobsen_US
dc.subjectmagnetic fieldsen_US
dc.subjectRadial velocitiesen_US
dc.subjectKinematicsen_US
dc.subjectPlasma dynamicsen_US
dc.titleAmplitude and size scaling for interchange motions of plasma filamentsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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