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dc.contributor.authorBenavides, Santiago J
dc.contributor.authorBurns, Keaton J
dc.contributor.authorGallet, Basile
dc.contributor.authorFlierl, Glenn R
dc.date.accessioned2023-02-15T18:44:03Z
dc.date.available2023-02-15T18:44:03Z
dc.date.issued2022
dc.identifier.urihttps://hdl.handle.net/1721.1/148081
dc.description.abstract<jats:title>Abstract</jats:title> <jats:p>Despite the increasing sophistication of numerical models of hot Jupiter atmospheres, the large timescale separation required in simulating the wide range in electrical conductivity between the dayside and nightside has made it difficult to run fully consistent magnetohydrodynamic (MHD) models. This has led to many studies that resort to drag parameterizations of MHD. In this study, we revisit the question of the Lorentz force as an effective drag by running a series of direct numerical simulations of a weakly rotating, poorly conducting flow in the presence of a misaligned, strong background magnetic field. We find that the drag parameterization fails once the timescale associated with the Lorentz force becomes shorter than the dynamical timescale in the system, beyond which the effective drag coefficient remains roughly constant, despite orders-of-magnitude variation in the Lorentz (magnetic) timescale. We offer an improvement to the drag parameterization by considering the relevant asymptotic limit of low conductivity and strong background magnetic field, known as the quasi-static MHD approximation of the Lorentz force. This approximation removes the fast timescale associated with magnetic diffusion, but retains a more complex version of the Lorentz force, which could be utilized in future numerical models of hot Jupiter atmospheric circulation.</jats:p>en_US
dc.language.isoen
dc.publisherAmerican Astronomical Societyen_US
dc.relation.isversionof10.3847/1538-4357/AC9137en_US
dc.rightsCreative Commons Attribution 4.0 International licenseen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.sourceThe American Astronomical Societyen_US
dc.titleEffective Drag in Rotating, Poorly Conducting Plasma Turbulenceen_US
dc.typeArticleen_US
dc.identifier.citationBenavides, Santiago J, Burns, Keaton J, Gallet, Basile and Flierl, Glenn R. 2022. "Effective Drag in Rotating, Poorly Conducting Plasma Turbulence." Astrophysical Journal, 938 (2).
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.relation.journalAstrophysical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2023-02-15T18:41:15Z
dspace.orderedauthorsBenavides, SJ; Burns, KJ; Gallet, B; Flierl, GRen_US
dspace.date.submission2023-02-15T18:41:16Z
mit.journal.volume938en_US
mit.journal.issue2en_US
mit.licensePUBLISHER_CC
mit.metadata.statusAuthority Work and Publication Information Neededen_US


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