Resistive and viscous dynamics of finite-amplitude shear waves at a magnetic X-point

Simple item page
dc.contributor.authorCraig, Ian J.D.
dc.date.accessioned2008-11-04T01:43:53Z
dc.date.available2008-11-04T01:43:53Z
dc.date.issued2005-11-22
dc.description.abstractThe dynamics and dissipation of axial shear waves, superposed on a planar magnetic X-point in a resistive viscous incompressible plasma, are analyzed numerically and analytically. The interplay of viscous and resistive effects is demonstrated by deriving solutions for various values of the scalar coefficients of viscosity and resistivity. These solutions show that viscous-resistive coupling can dramatically affect the global energy dissipation. When either viscosity or resistivity vanishes, the solutions are characterized by oscillatory decaying eigenmodes that maintain equipartition between the magnetic and kinetic energies. This behavior persists when resistivity is the dominant dissipation mechanism. When viscosity is the dominant dissipation mechanism, initial oscillations are followed by exponential decay at sufficiently long times. The applicability of the results to flares in solar active regions, where the viscous Reynolds number can be much smaller than the resistive one, is discussed.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationCraig, I. J. D. & Litvinenko, Y. E. (2005). Resistive and viscous dynamics of finite-amplitude shear waves at a magnetic X-point. Physics of Plasmas, 12, 112105 .en_US
dc.identifier.doi10.1063/1.2132249en_US
dc.identifier.issn1070-664X
dc.identifier.urihttps://hdl.handle.net/10289/1262
dc.language.isoen
dc.publisherAmerican Institute of Physics (online)en_NZ
dc.relation.isPartOfPhysics of Plasmasen_NZ
dc.relation.urihttp://link.aip.org/link/?PHPAEN/12/112105/1en_US
dc.rightsCopyright 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in the journal Physics of Plasmas and may be found at http://jmp.aip.org/jmp/top.jspen_US
dc.subjectmathematicsen_US
dc.subjectplasma wavesen_US
dc.subjectplasma transport processesen_US
dc.subjectplasma oscillationsen_US
dc.subjectplasma instabilityen_US
dc.subjectplasma magnetohydrodynamicsen_US
dc.subjectsolar flaresen_US
dc.subjectnumerical analysisen_US
dc.titleResistive and viscous dynamics of finite-amplitude shear waves at a magnetic X-pointen_US
dc.typeJournal Articleen_US
pubs.begin-page1en_NZ
pubs.editionNovemberen_NZ
pubs.elements-id32489
pubs.end-page11en_NZ
pubs.issue11en_NZ
pubs.volume12en_NZ
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Craig -Viscous dynamics.pdf
Size:
191.08 KB
Format:
Adobe Portable Document Format
Thumbnail Image
Name: Craig -Viscous dynamics.pdf
Size: 191.08 KB
Kind: Adobe PDF
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.79 KB
Format:
Item-specific license agreed upon to submission
Description:
Name: license.txt
Size: 1.79 KB
Kind: License
Collections
Computing and Mathematical Sciences Papers