Vlasov methods in space physics and astrophysics

M Palmroth, U Ganse, Y Pfau-Kempf… - Living reviews in …, 2018 - Springer
This paper reviews Vlasov-based numerical methods used to model plasma in space
physics and astrophysics. Plasma consists of collectively behaving charged particles that …

An overview of intrinsic torque and momentum transport bifurcations in toroidal plasmas

PH Diamond, Y Kosuga, ÖD Gürcan, CJ McDevitt… - Nuclear …, 2013 - iopscience.iop.org
An overview of the physics of intrinsic torque is presented, with special emphasis on the
phenomenology of intrinsic toroidal rotation in tokamaks, its theoretical understanding, and …

A 5D gyrokinetic full-f global semi-Lagrangian code for flux-driven ion turbulence simulations

V Grandgirard, J Abiteboul, J Bigot… - Computer physics …, 2016 - Elsevier
This paper addresses non-linear gyrokinetic simulations of ion temperature gradient (ITG)
turbulence in tokamak plasmas. The electrostatic GYSELA code is one of the few …

The gyrokinetic description of microturbulence in magnetized plasmas

JA Krommes - Annual review of fluid mechanics, 2012 - annualreviews.org
Nonlinear gyrokinetics is the major formalism used for both the analytical and numerical
descriptions of low-frequency microturbulence in magnetized plasmas. Its derivation from …

Intrinsic toroidal rotation driven by turbulent and neoclassical processes in tokamak plasmas from global gyrokinetic simulations

H Zhu, T Stoltzfus-Dueck, R Hager, S Ku, CS Chang - Physical Review Letters, 2024 - APS
Gyrokinetic tokamak plasmas can exhibit intrinsic toroidal rotation driven by the residual
stress. While most studies have attributed the residual stress to the parallel-momentum flux …

Second order gyrokinetic theory for particle-in-cell codes

N Tronko, A Bottino, E Sonnendrücker - Physics of Plasmas, 2016 - pubs.aip.org
The main idea of the gyrokinetic dynamical reduction consists in a systematical removal of
the fast scale motion (the gyromotion) from the dynamics of the plasma, resulting in a …

A gyrokinetic model for the plasma periphery of tokamak devices

BJ Frei, R Jorge, P Ricci - Journal of Plasma Physics, 2020 - cambridge.org
A gyrokinetic model is presented that can properly describe large and small amplitude
electromagnetic fluctuations occurring on scale lengths ranging from the electron Larmor …

Intrinsic rotation in axisymmetric devices

T Stoltzfus-Dueck - Plasma Physics and Controlled Fusion, 2019 - iopscience.iop.org
Toroidal rotation is critical for fusion in tokamaks, since it stabilizes instabilities that can
otherwise cause disruptions or degrade confinement. Unlike present-day devices, ITER …

Transport-driven toroidal rotation with general viscosity profile

T Stoltzfus-Dueck, R Brzozowski III - Nuclear Fusion, 2024 - iopscience.iop.org
Using the assumption of a weak normalized turbulent viscosity, usually valid in practice, the
modulated-transport model (Stoltzfus-Dueck 2012 Phys. Plasmas19 055908) is generalized …

Gyrokinetic theory of turbulent acceleration of parallel rotation in tokamak plasmas

L Wang, PH Diamond - Physical Review Letters, 2013 - APS
A mechanism for turbulent acceleration of parallel rotation is discovered using gyrokinetic
theory. This new turbulent acceleration term cannot be written as a divergence of parallel …