Electromagnetic full-$$f$$ gyrokinetics in the tokamak edge with discontinuous Galerkin methods
Abstract
We present an energy-conserving discontinuous Galerkin scheme for the full- $$f$$ electromagnetic gyrokinetic system in the long-wavelength limit. We use the symplectic formulation and solve directly for $$\unicode[STIX]{x2202}A_{\Vert }/\unicode[STIX]{x2202}t$ , the inductive component of the parallel electric field, using a generalized Ohm’s law derived directly from the gyrokinetic equation. Linear benchmarks are performed to verify the implementation and show that the scheme avoids the Ampère cancellation problem. We perform a nonlinear electromagnetic simulation in a helical open-field-line system as a rough model of the tokamak scrape-off layer using parameters from the National Spherical Torus Experiment (NSTX). This is the first published nonlinear electromagnetic gyrokinetic simulation on open field lines. Comparisons are made to a corresponding electrostatic simulation.
- Authors:
-
- Princeton Univ., NJ (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1660956
- Alternate Identifier(s):
- OSTI ID: 1668767
- Grant/Contract Number:
- FG02-97ER25308; FC02-08ER54966; AC0209CH11466
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Plasma Physics
- Additional Journal Information:
- Journal Volume: 86; Journal Issue: 1; Journal ID: ISSN 0022-3778
- Publisher:
- Cambridge University Press
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Mandell, N. R., Hakim, A., Hammett, G. W., and Francisquez, M. Electromagnetic full-$f$ gyrokinetics in the tokamak edge with discontinuous Galerkin methods. United States: N. p., 2020.
Web. doi:10.1017/s0022377820000070.
Mandell, N. R., Hakim, A., Hammett, G. W., & Francisquez, M. Electromagnetic full-$f$ gyrokinetics in the tokamak edge with discontinuous Galerkin methods. United States. https://doi.org/10.1017/s0022377820000070
Mandell, N. R., Hakim, A., Hammett, G. W., and Francisquez, M. Mon .
"Electromagnetic full-$f$ gyrokinetics in the tokamak edge with discontinuous Galerkin methods". United States. https://doi.org/10.1017/s0022377820000070. https://www.osti.gov/servlets/purl/1660956.
@article{osti_1660956,
title = {Electromagnetic full-$f$ gyrokinetics in the tokamak edge with discontinuous Galerkin methods},
author = {Mandell, N. R. and Hakim, A. and Hammett, G. W. and Francisquez, M.},
abstractNote = {We present an energy-conserving discontinuous Galerkin scheme for the full- $f$ electromagnetic gyrokinetic system in the long-wavelength limit. We use the symplectic formulation and solve directly for $\unicode[STIX]{x2202}A_{\Vert }/\unicode[STIX]{x2202}t$ , the inductive component of the parallel electric field, using a generalized Ohm’s law derived directly from the gyrokinetic equation. Linear benchmarks are performed to verify the implementation and show that the scheme avoids the Ampère cancellation problem. We perform a nonlinear electromagnetic simulation in a helical open-field-line system as a rough model of the tokamak scrape-off layer using parameters from the National Spherical Torus Experiment (NSTX). This is the first published nonlinear electromagnetic gyrokinetic simulation on open field lines. Comparisons are made to a corresponding electrostatic simulation.},
doi = {10.1017/s0022377820000070},
journal = {Journal of Plasma Physics},
number = 1,
volume = 86,
place = {United States},
year = {Mon Mar 02 00:00:00 EST 2020},
month = {Mon Mar 02 00:00:00 EST 2020}
}
Web of Science
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