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dc.contributor.author
Pietarila Graham, Jonathan
dc.contributor.author
Holm, Darryl D.
dc.contributor.author
Mininni, Pablo Daniel
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dc.contributor.author
Pouquet, Annick
dc.date.available
2018-08-24T17:18:35Z
dc.date.issued
2011-09
dc.identifier.citation
Pietarila Graham, Jonathan; Holm, Darryl D.; Mininni, Pablo Daniel; Pouquet, Annick; The effect of subfilter-scale physics on regularization models; Springer/Plenum Publishers; Journal Of Scientific Computing; 49; 1; 9-2011; 21-34
dc.identifier.issn
0885-7474
dc.identifier.uri
http://hdl.handle.net/11336/57011
dc.description.abstract
The subfilter-scale (SFS) physics of regularization models are investigated to understand the regularizations' performance as SFS models. Suppression of spectrally local SFS interactions and conservation of small-scale circulation in the Lagrangian-averaged Navier-Stokes α-model (LANS-α) is found to lead to the formation of rigid bodies. These contaminate the superfilter-scale energy spectrum with a scaling that approaches k +1 as the SFS spectra is resolved. The Clark-α and Leray-α models, truncations of LANS-α, do not conserve small-scale circulation and do not develop rigid bodies. LANS-α, however, is closest to Navier-Stokes in intermittency properties. All three models are found to be stable at high Reynolds number. Differences between L 2 and H 1 norm models are clarified. For magnetohydrodynamics (MHD), the presence of the Lorentz force as a source (or sink) for circulation and as a facilitator of both spectrally nonlocal large to small scale interactions as well as local SFS interactions prevents the formation of rigid bodies in Lagrangian-averaged MHD (LAMHD-α). LAMHD-α performs well as a predictor of superfilter-scale energy spectra and of intermittent current sheets at high Reynolds numbers. It may prove generally applicable as a MHD-LES. © 2010 Springer Science+Business Media, LLC.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer/Plenum Publishers
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Alpha Models
dc.subject
Intermittency
dc.subject
Les
dc.subject
Mhd
dc.subject
Subgrid-Scale Processes
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.subject.classification
Ciencias de la Computación
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dc.subject.classification
Ciencias de la Computación e Información
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The effect of subfilter-scale physics on regularization models
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-24T13:44:11Z
dc.journal.volume
49
dc.journal.number
1
dc.journal.pagination
21-34
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Pietarila Graham, Jonathan. University Johns Hopkins; Estados Unidos
dc.description.fil
Fil: Holm, Darryl D.. Imperial College London; Reino Unido
dc.description.fil
Fil: Mininni, Pablo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: Pouquet, Annick. National Center for Atmospheric Research; Estados Unidos
dc.journal.title
Journal Of Scientific Computing
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10915-010-9428-4
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10915-010-9428-4
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