Publication:
Investigation of the interaction between competing types of nondiffusive transport in drift wave turbulence

dc.affiliation.dptoUC3M. Departamento de Ingeniería Telemáticaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Aplicaciones y Servicios Telemáticos (GAST)es
dc.contributor.authorOgata, D.
dc.contributor.authorNewman, D.E.
dc.contributor.authorSánchez Fernández, Luis Raúl
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.date.accessioned2022-09-15T10:48:42Z
dc.date.available2022-09-15T10:48:42Z
dc.date.issued2017-05
dc.description.abstractRadial transport in turbulence dominated tokamak plasmas has been observed to deviate from classical diffusion in certain regimes relevant for magnetic confinement fusion. These situations at least include near-marginal turbulence, where radial transport becomes superdiffusive and mediated by elongated radial structures (or avalanches) and transport across radially sheared poloidal flows, where radial subdiffusion often ensues. In this paper, the interaction between very different physical ingredients responsible for these two types of nondiffusive dynamics (namely, turbulent profile relaxation close to a local threshold and the interaction with radially sheared zonal flows) is studied in detail in the context of a simple two-dimensional electrostatic plasma fluid turbulence model based on the dissipative trapped electron mode. It is shown that, depending on the relative relevance of each of these ingredients, which can be tuned in various ways, a variety of nondiffusive radial transport behaviors can be found in the system. The results also illustrate the fact that the classical diffusion paradigm is often insufficient to describe turbulent transport in systems with self-generated flows and turbulent profile relaxations. Published by AIP Publishing.en
dc.description.sponsorshipThis work was supported by U.S. DOE under Contract No. DE-FG02-04ER54741 with the University of Alaska Fairbanks and in part by a grant of HPC resources from the Arctic Region Supercomputing Center at the University of Alaska Fairbanks. This research was also sponsored in part by DGICT (Direccion General de Investigaciones Cientıficas y Tecnologicas) of Spain under Project No. ENE2015-68265.en
dc.format.extent13
dc.identifier.bibliographicCitationOgata, D., Newman, D. E., & Sánchez, R. (2017). Investigation of the interaction between competing types of nondiffusive transport in drift wave turbulence. In Physics of Plasmas, 24(5), 052307-052320en
dc.identifier.doihttps://doi.org/10.1063/1.4983053
dc.identifier.issn1070-664X
dc.identifier.publicationfirstpage052307
dc.identifier.publicationissue5
dc.identifier.publicationlastpage052320
dc.identifier.publicationtitlePHYSICS OF PLASMASen
dc.identifier.publicationvolume24
dc.identifier.urihttps://hdl.handle.net/10016/35718
dc.identifier.uxxiAR/0000020139
dc.language.isoengen
dc.publisherAIP Publishingen
dc.relation.projectIDGobierno de España. ENE2015-68265-Pes
dc.relation.publisherversionhttps://aip.scitation.org/doi/10.1063/1.4983053en
dc.rights© 2017 Author(s).en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaFísicaes
dc.subject.otherElectron mode turbulenceen
dc.subject.otherPlasma-confinementen
dc.subject.otherSheared flowen
dc.subject.otherDynamicsen
dc.subject.otherDiffusionen
dc.subject.otherTokamaksen
dc.subject.otherFluxen
dc.titleInvestigation of the interaction between competing types of nondiffusive transport in drift wave turbulenceen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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