Interpolation for momentum conservation in 3D toroidal gyrokinetic particle simulation of plasmas

Jukka A. Heikkinen (Corresponding Author), T. Korpilo, S.J. Janhunen, T.P. Kiviniemi, S. Leerink, F. Ogando

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

A linear momentum conserving interpolation for the electric field in a three-dimensional toroidal particle-in-cell gyrokinetic plasma simulation in a tokamak configuration is found unstable due to the false divergence of Ε X Β flow of particles. A paradigm 8-point finite difference for interpolation of the radial electric field on the poloidal plane is proposed which stabilizes the simulation.
Original languageEnglish
Pages (from-to)1719-1727
JournalComputer Physics Communications
Volume183
Issue number8
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Funding

This work was supported by the Academy of Finland (Grant No. 122435 and No. 134977), EFDA Topical Group Activities WP10-ITM-IMP4 "Transport Processes and Micro stability" and High Level Support Team , and by the supercomputing facilities of CSC, DEISA, and HPC-FF.

Keywords

  • Fusion plasma physics
  • gyrokinetic particle simulation
  • momentum conserving interpolation
  • stellarators

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