An implicit particle code with exact energy and charge conservation for electromagnetic studies of dense plasmas
Journal Article
·
· Journal of Computational Physics
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
A collisional particle code based on implicit energy- and charge-conserving methods is presented. A modified version of the particle-suppressed Jacobian-Free Newton-Krylov method that can enhance the solver efficiency is introduced. Mathematically, it is shown that this new approach can be viewed as a fixed-point iteration method for the particle positions. The model can exactly conserve global energy and local charge and can efficiently use time steps larger than the plasma period. In conclusion, the algorithm's ability to simulate dense plasmas accurately and efficiently is quantified by simulating the dynamic compression of a plasma slab via a magnetic piston in 1D planar geometry.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- AC52-07NA27344; 21-FS-048; 23-ERD-007
- OSTI ID:
- 2203627
- Report Number(s):
- LLNL-JRNL-845634; 1069327
- Journal Information:
- Journal of Computational Physics, Vol. 491; ISSN 0021-9991
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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