Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.3424
DC FieldValueLanguage
dc.contributor.authorTretiak, Krasymyr-
dc.contributor.authorBuchanan, James-
dc.contributor.authorAkers, Rob-
dc.contributor.authorRuprecht, Daniel-
dc.date.accessioned2021-04-14T07:57:29Z-
dc.date.available2021-04-14T07:57:29Z-
dc.date.issued2021-07-
dc.identifier.citationComputer Physics Communications 264: 107876 (2021-07)de_DE
dc.identifier.issn0010-4655de_DE
dc.identifier.urihttp://hdl.handle.net/11420/9256-
dc.description.abstractModelling neutral beam injection (NBI) in fusion reactors requires computing the trajectories of large ensembles of particles. Slowing down times of up to one second combined with nanosecond time steps make these simulations computationally very costly. This paper explores the performance of BGSDC, a new numerical time stepping method, for tracking ions generated by NBI in the DIII-D and JET reactors. BGSDC is a high-order generalisation of the Boris method, combining it with spectral deferred corrections and the Generalized Minimal Residual method GMRES. Without collision modelling, where numerical drift can be quantified accurately, we find that BGSDC can deliver higher quality particle distributions than the standard Boris integrator at comparable cost or comparable distributions at lower cost. With collision models, quantifying accuracy is difficult but we show that BGSDC produces stable distributions at larger time steps than Boris.en
dc.language.isoende_DE
dc.publisherNorth Holland Publ. Co./Elsevierde_DE
dc.relation.ispartofComputer Physics Communicationsde_DE
dc.rightsCC BY 4.0de_DE
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/de_DE
dc.subjectBoris integratorde_DE
dc.subjectDIII-Dde_DE
dc.subjectFast ionsde_DE
dc.subjectJETde_DE
dc.subjectNeutral beam injectionde_DE
dc.subjectParticle trackingde_DE
dc.subjectSpectral deferred correctionsde_DE
dc.subjectPhysics - Computational Physicsde_DE
dc.subjectPhysics - Computational Physicsde_DE
dc.subjectComputer Science - Numerical Analysisde_DE
dc.subjectMathematics - Numerical Analysisde_DE
dc.subject.ddc004: Informatikde_DE
dc.subject.ddc510: Mathematikde_DE
dc.subject.ddc530: Physikde_DE
dc.titlePerformance of the BGSDC integrator for computing fast ion trajectories in nuclear fusion reactorsde_DE
dc.typeArticlede_DE
dc.identifier.doi10.15480/882.3424-
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.identifier.urnurn:nbn:de:gbv:830-882.0131806-
tuhh.oai.showtruede_DE
tuhh.abstract.englishModelling neutral beam injection (NBI) in fusion reactors requires computing the trajectories of large ensembles of particles. Slowing down times of up to one second combined with nanosecond time steps make these simulations computationally very costly. This paper explores the performance of BGSDC, a new numerical time stepping method, for tracking ions generated by NBI in the DIII-D and JET reactors. BGSDC is a high-order generalisation of the Boris method, combining it with spectral deferred corrections and the Generalized Minimal Residual method GMRES. Without collision modelling, where numerical drift can be quantified accurately, we find that BGSDC can deliver higher quality particle distributions than the standard Boris integrator at comparable cost or comparable distributions at lower cost. With collision models, quantifying accuracy is difficult but we show that BGSDC produces stable distributions at larger time steps than Boris.de_DE
tuhh.publisher.doi10.1016/j.cpc.2021.107876-
tuhh.publication.instituteMathematik E-10de_DE
tuhh.identifier.doi10.15480/882.3424-
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.volume264de_DE
dc.rights.nationallicensefalsede_DE
dc.identifier.arxiv2005.07705v2de_DE
dc.identifier.scopus2-s2.0-85102656441de_DE
tuhh.container.articlenumber107876de_DE
local.status.inpressfalsede_DE
local.type.versionpublishedVersionde_DE
datacite.resourceTypeJournal Article-
datacite.resourceTypeGeneralText-
item.grantfulltextopen-
item.cerifentitytypePublications-
item.openairetypeArticle-
item.creatorOrcidTretiak, Krasymyr-
item.creatorOrcidBuchanan, James-
item.creatorOrcidAkers, Rob-
item.creatorOrcidRuprecht, Daniel-
item.languageiso639-1en-
item.creatorGNDTretiak, Krasymyr-
item.creatorGNDBuchanan, James-
item.creatorGNDAkers, Rob-
item.creatorGNDRuprecht, Daniel-
item.fulltextWith Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.mappedtypeArticle-
crisitem.author.deptMathematik E-10-
crisitem.author.orcid0000-0001-6513-2133-
crisitem.author.orcid0000-0003-1904-2473-
crisitem.author.parentorgStudiendekanat Elektrotechnik, Informatik und Mathematik (E)-
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