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dc.contributor.authorWiesenberger, M.
dc.contributor.authorHeld, Markus
dc.date.accessioned2024-10-08T07:50:16Z
dc.date.available2024-10-08T07:50:16Z
dc.date.issued2024-04-18
dc.description.abstractA full-F, isothermal, electromagnetic, gyro-fluid model is used to simulate plasma turbulence in a COMPASS-sized, diverted tokamak. A parameter scan covering three orders of magnitude of plasma resistivity and two values for the ion to electron temperature ratio with otherwise fixed parameters is setup and analysed. Two transport regimes for high and low plasma resistivities are revealed. Beyond a critical resistivity the mass and energy confinement reduces with increasing resistivity. Further, for high plasma resistivity the direction of parallel acceleration is swapped compared to low resistivity. Three-dimensional visualisations using ray tracing techniques are displayed and discussed. The field-alignment of turbulent fluctuations in density and parallel current becomes evident. Relative density fluctuation amplitudes increase from below 1% in the core to 15% in the edge and up to 40% in the scrape-off layer. Finally, the integration of exact conservation laws over the closed field line region allows for an identification of numerical errors within the simulations. The electron force balance and energy conservation show relative errors on the order of 10<sup>−3</sup> while the particle conservation and ion momentum balance show errors on the order of 10<sup>−2</sup> . All simulations are performed with a new version of the FELTOR code, which is fully parallelized on GPUs. Each simulation covers a couple of milliseconds of turbulence.en_US
dc.identifier.citationWiesenberger, Held. Effects of plasma resistivity in FELTOR simulations of three-dimensional full-F gyro-fluid turbulence. Plasma Physics and Controlled Fusion. 2024;66(6)en_US
dc.identifier.cristinIDFRIDAID 2266626
dc.identifier.doi10.1088/1361-6587/ad3670
dc.identifier.issn0741-3335
dc.identifier.issn1361-6587
dc.identifier.urihttps://hdl.handle.net/10037/35115
dc.language.isoengen_US
dc.publisherIOP Publishingen_US
dc.relation.journalPlasma Physics and Controlled Fusion
dc.relation.projectIDinfo:eu-repo/grantAgreement/Funder/H2020/101052200/EU/Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium/EUROfusion/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleEffects of plasma resistivity in FELTOR simulations of three-dimensional full-F gyro-fluid turbulenceen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)