Fully-implicit ultrascale physics solvers and application to ion source modelling

Kris Beckwith, Seth Veitzer, Stephen F. McCormick, John W. Ruge, Luke N. Olson, Jon C. Cahoun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many problems of interest in plasma modelling are subject to the 'tyranny of scales', specifically, problems that encompass physical processes that operate on timescales that are separated by many orders of magnitude. Investigating such problems therefore requires the use of implicit time-integration schemes, which advance problem solutions on the timescale of interest, while incorporating the physics of the fast-timescales. One promising route to develop these implicit solvers is the combination of Jacobian-Free Newton- Krylov methods (JFNK, [1]), but adapting these methods to work in ultra scale computing environments is a formidable challenge. Here, we describe research on new approaches to adapt Algebraic Mulgrid based solvers (that can be used for provide efficient pre-conditioners for JFNK methods) to ultrascale computing environments, the development and testing of JFNK solvers for coupled plasma-electromagnetics within the USIM framework [2] and the application of these methods to modelling H- ion sources for the Spallation Neutron Source at ORNL.

Original languageEnglish (US)
Title of host publicationICOPS/BEAMS 2014 - 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479927111
DOIs
StatePublished - Jan 16 2015
Event41st IEEE International Conference on Plasma Science, ICOPS 2014 and the 20th IEEE International Conference on High-Power Particle Beams, BEAMS 2014 - Washington, United States
Duration: May 25 2014May 29 2014

Publication series

NameICOPS/BEAMS 2014 - 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams

Other

Other41st IEEE International Conference on Plasma Science, ICOPS 2014 and the 20th IEEE International Conference on High-Power Particle Beams, BEAMS 2014
CountryUnited States
CityWashington
Period5/25/145/29/14

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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    Beckwith, K., Veitzer, S., McCormick, S. F., Ruge, J. W., Olson, L. N., & Cahoun, J. C. (2015). Fully-implicit ultrascale physics solvers and application to ion source modelling. In ICOPS/BEAMS 2014 - 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams [7012726] (ICOPS/BEAMS 2014 - 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PLASMA.2014.7012726