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 language | English |
|---|---|
| Pages (from-to) | 1719-1727 |
| Journal | Computer Physics Communications |
| Volume | 183 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2012 |
| MoE publication type | A1 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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