Effects of seed magnetic fields on magnetohydrodynamic implosion structure and dynamics

Handle URI:
http://hdl.handle.net/10754/346743
Title:
Effects of seed magnetic fields on magnetohydrodynamic implosion structure and dynamics
Authors:
Mostert, W.; Wheatley, V.; Samtaney, Ravi ( 0000-0002-4702-6473 ) ; Pullin, D. I.
Abstract:
The effects of various seed magnetic fields on the dynamics of cylindrical and spherical implosions in ideal magnetohydrodynamics are investigated. Here, we present a fundamental investigation of this problem utilizing cylindrical and spherical Riemann problems under three seed field configurations to initialize the implosions. The resulting flows are simulated numerically, revealing rich flow structures, including multiple families of magnetohydrodynamic shocks and rarefactions that interact non-linearly. We fully characterize these flow structures, examine their axi- and spherisymmetry-breaking behaviour, and provide data on asymmetry evolution for different field strengths and driving pressures for each seed field configuration. We find that out of the configurations investigated, a seed field for which the implosion centre is a saddle point in at least one plane exhibits the least degree of asymmetry during implosion.
KAUST Department:
Mechanical Engineering Program
Citation:
Effects of seed magnetic fields on magnetohydrodynamic implosion structure and dynamics 2014, 26 (12):126102 Physics of Fluids
Publisher:
AIP Publishing
Journal:
Physics of Fluids
Issue Date:
Dec-2014
DOI:
10.1063/1.4902432
Type:
Article
ISSN:
1070-6631; 1089-7666
Additional Links:
http://scitation.aip.org/content/aip/journal/pof2/26/12/10.1063/1.4902432
Appears in Collections:
Articles; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMostert, W.en
dc.contributor.authorWheatley, V.en
dc.contributor.authorSamtaney, Ravien
dc.contributor.authorPullin, D. I.en
dc.date.accessioned2015-03-17T06:02:19Zen
dc.date.available2015-03-17T06:02:19Zen
dc.date.issued2014-12en
dc.identifier.citationEffects of seed magnetic fields on magnetohydrodynamic implosion structure and dynamics 2014, 26 (12):126102 Physics of Fluidsen
dc.identifier.issn1070-6631en
dc.identifier.issn1089-7666en
dc.identifier.doi10.1063/1.4902432en
dc.identifier.urihttp://hdl.handle.net/10754/346743en
dc.description.abstractThe effects of various seed magnetic fields on the dynamics of cylindrical and spherical implosions in ideal magnetohydrodynamics are investigated. Here, we present a fundamental investigation of this problem utilizing cylindrical and spherical Riemann problems under three seed field configurations to initialize the implosions. The resulting flows are simulated numerically, revealing rich flow structures, including multiple families of magnetohydrodynamic shocks and rarefactions that interact non-linearly. We fully characterize these flow structures, examine their axi- and spherisymmetry-breaking behaviour, and provide data on asymmetry evolution for different field strengths and driving pressures for each seed field configuration. We find that out of the configurations investigated, a seed field for which the implosion centre is a saddle point in at least one plane exhibits the least degree of asymmetry during implosion.en
dc.publisherAIP Publishingen
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/pof2/26/12/10.1063/1.4902432en
dc.rightsArchived with thanks to Physics of Fluidsen
dc.titleEffects of seed magnetic fields on magnetohydrodynamic implosion structure and dynamicsen
dc.typeArticleen
dc.contributor.departmentMechanical Engineering Programen
dc.identifier.journalPhysics of Fluidsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionSchool of Mechanical and Mining Engineering, University of Queensland, Queensland 4072, Australiaen
dc.contributor.institutionSchool of Mechanical and Mining Engineering, University of Queensland, Queensland 4072, Australiaen
dc.contributor.institutionGraduate Aerospace Laboratories, 105-50, California Institute of Technology, Pasadena, California 91125, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorSamtaney, Ravien
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