stella: An operator-split, implicit–explicit δf-gyrokinetic code for general magnetic field configurations

M. Barnes; F. I. Parra; M. Landreman

doi:10.1016/j.jcp.2019.01.025

stella: An operator-split, implicit–explicit δf-gyrokinetic code for general magnetic field configurations

M. Barnes, F. I. Parra, M. Landreman

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Here we present details of an operator-split, implicit–explicit numerical scheme for the solution of the gyrokinetic-Poisson system of equations in the local limit. This scheme has been implemented in a new code called stella, which is capable of evolving electrostatic fluctuations with full kinetic electron effects and an arbitrary number of ion species in general magnetic geometry. We demonstrate the advantages of this mixed approach over a fully explicit treatment and provide linear and nonlinear benchmark comparisons for both axisymmetric and non-axisymmetric magnetic equilibria.

Original language	English (US)
Pages (from-to)	365-380
Number of pages	16
Journal	Journal of Computational Physics
Volume	391
DOIs	https://doi.org/10.1016/j.jcp.2019.01.025
State	Published - Aug 15 2019
Externally published	Yes

All Science Journal Classification (ASJC) codes

Numerical Analysis
Modeling and Simulation
Physics and Astronomy (miscellaneous)
General Physics and Astronomy
Computer Science Applications
Computational Mathematics
Applied Mathematics

Keywords

Gyrokinetics
Magnetic confinement fusion
Stellarator
Transport
Turbulence

Access to Document

10.1016/j.jcp.2019.01.025

Cite this

@article{cb73b173ef8f45589287c1d47659b979,

title = "stella: An operator-split, implicit–explicit δf-gyrokinetic code for general magnetic field configurations",

abstract = "Here we present details of an operator-split, implicit–explicit numerical scheme for the solution of the gyrokinetic-Poisson system of equations in the local limit. This scheme has been implemented in a new code called stella, which is capable of evolving electrostatic fluctuations with full kinetic electron effects and an arbitrary number of ion species in general magnetic geometry. We demonstrate the advantages of this mixed approach over a fully explicit treatment and provide linear and nonlinear benchmark comparisons for both axisymmetric and non-axisymmetric magnetic equilibria.",

keywords = "Gyrokinetics, Magnetic confinement fusion, Stellarator, Transport, Turbulence",

author = "M. Barnes and Parra, {F. I.} and M. Landreman",

note = "Publisher Copyright: {\textcopyright} 2019 M. Barnes, F.I. Parra, M. Landreman",

year = "2019",

month = aug,

day = "15",

doi = "10.1016/j.jcp.2019.01.025",

language = "English (US)",

volume = "391",

pages = "365--380",

journal = "Journal of Computational Physics",

issn = "0021-9991",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - stella

T2 - An operator-split, implicit–explicit δf-gyrokinetic code for general magnetic field configurations

AU - Barnes, M.

AU - Parra, F. I.

AU - Landreman, M.

PY - 2019/8/15

Y1 - 2019/8/15

N2 - Here we present details of an operator-split, implicit–explicit numerical scheme for the solution of the gyrokinetic-Poisson system of equations in the local limit. This scheme has been implemented in a new code called stella, which is capable of evolving electrostatic fluctuations with full kinetic electron effects and an arbitrary number of ion species in general magnetic geometry. We demonstrate the advantages of this mixed approach over a fully explicit treatment and provide linear and nonlinear benchmark comparisons for both axisymmetric and non-axisymmetric magnetic equilibria.

AB - Here we present details of an operator-split, implicit–explicit numerical scheme for the solution of the gyrokinetic-Poisson system of equations in the local limit. This scheme has been implemented in a new code called stella, which is capable of evolving electrostatic fluctuations with full kinetic electron effects and an arbitrary number of ion species in general magnetic geometry. We demonstrate the advantages of this mixed approach over a fully explicit treatment and provide linear and nonlinear benchmark comparisons for both axisymmetric and non-axisymmetric magnetic equilibria.

KW - Gyrokinetics

KW - Magnetic confinement fusion

KW - Stellarator

KW - Transport

KW - Turbulence

UR - http://www.scopus.com/inward/record.url?scp=85065514311&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065514311&partnerID=8YFLogxK

U2 - 10.1016/j.jcp.2019.01.025

DO - 10.1016/j.jcp.2019.01.025

M3 - Article

AN - SCOPUS:85065514311

SN - 0021-9991

VL - 391

SP - 365

EP - 380

JO - Journal of Computational Physics

JF - Journal of Computational Physics

ER -

stella: An operator-split, implicit–explicit δf-gyrokinetic code for general magnetic field configurations

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this