Results 51 to 60 of about 464 (190)

Special issue: Machine learning methods in plasma physics

, 2023
Contributions to Plasma Physics, Volume 63, Issue 5-6, June-July 2023.
wiley   +1 more source

Nonlinear Gyrokinetic Simulation of the Magnetosphere‐Ionosphere Feedback Coupling

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract A nonlinear gyrokinetic simulation is applied to the magnetosphere‐ionosphere (M‐I) coupling system to investigate spontaneous growth of auroral structures and electron acceleration self‐consistently. Perturbations of electron density, potential and field‐aligned current in the auroral ionosphere develop through the feedback instability ...
T.‐H. Watanabe, K. Fujita, S. Maeyama
wiley   +1 more source

Global gyrokinetic simulations of magnetic geometry and radial electric field effects on turbulent transport in Wendelstein 7-X

Nuclear Fusion
We present a more detailed numerical analysis of the global GENE-3D simulations of Bähner et al (the W7-X Team) 2026 Nucl. Fusion 66 016007, focusing on turbulent heat and particle transport and the role of the equilibrium radial electric field across ...
A. Bañón Navarro, L. Podavini, J.-P. Bähner, J. Smoniewski, S.K. Hansen, A. Di Siena, M. Porkolab, E.M. Edlund, A. von Stechow, S.A. Bozhenkov, O.P. Ford, G. Fuchert, A. Langenberg, N.A. Pablant, E. Pasch, P.Zs. Pölöskei, T. Romba, A. Zocco, O. Grulke, F. Jenko, the W7-X Team   +20 more
doaj   +1 more source

Growth of Auroral Structures, Vortex Formation, Turbulence Transition, and Energy Cascade in Alfvénic Magnetosphere‐Ionosphere Coupling

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Magnetohydrodynamic simulations of the Alfvénic magnetosphere‐ionosphere (M‐I) coupling reveal a comprehensive picture of nonlinear development of the feedback instability, demonstrating spontaneous growth of auroral structures of density and current enhancements, vortex formation, turbulence transition, and energy cascade.
T.‐H. Watanabe, K. Fujita, S. Maeyama
wiley   +1 more source

Scalable Quasineutral Solver for Gyrokinetic Simulation [PDF]

, 2012
La modélisation du transport turbulent est un point clef pour prédire les propriétés de confinement d'un plasma de fusion. La théorie gyrocinétique propose une description à 5 dimensions permettant de calculer et comprendre les effets cinétiques dans un plasma.
Latu, Guillaume, Grandgirard, Virginie, Crouseilles, Nicolas, Dif-Pradalier, Guilhem   +3 more
openaire   +3 more sources

Hamiltonian gyrokinetic Vlasov–Maxwell system [PDF]

Physics Letters A, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
J.W. Burby, A.J. Brizard, P.J. Morrison, H. Qin   +3 more
openaire   +1 more source

Searching for Universality of Turbulence in the Earth's Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Turbulence in space plasmas remains a fundamental challenge, and Earth's magnetosphere (MSP) offers a natural laboratory for its study. Using high‐resolution magnetic field data from the Magnetospheric Multiscale (MMS) mission, we extend a stochastic Markovian framework to analyze turbulence across 10 diverse magnetospheric regions, including ...
Dariusz Wójcik, Wiesław M. Macek
wiley   +1 more source

T3ST code: turbulent transport in tokamaks via stochastic trajectories

Nuclear Fusion
We introduce the Turbulent Transport in Tokamaks via Stochastic Trajectories (T3ST) code, designed to address the problem of turbulent transport using a statistical approach complementary to gyrokinetics.
D.I. Palade, L.M. Pomârjanschi
doaj   +1 more source

A h‐Adaptivity Strategy for Hybridizable Discontinuous Galerkin (HDG) Simulations of Fluid Transport Models in Tokamak Plasma

International Journal for Numerical Methods in Engineering, Volume 126, Issue 17, 15 September 2025.
ABSTRACT The highly anisotropic, multi‐scale nature of fusion plasma simulations in tokamaks, combined with the complexity in the geometries of plasma‐facing components and magnetic equilibrium, challenges numerical schemes. They therefore require the development of advanced numerical techniques to enhance computational efficiency and enable codes to ...
Marcello Capasso, Ivan Kudashev, Frédéric Schwander, Éric Serre   +3 more
wiley   +1 more source

Fast and Invertible Simplicial Approximation of Magnetic‐Following Interpolation for Visualizing Fusion Plasma Simulation Data

Computer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract We introduce a fast and invertible approximation for fusion plasma simulation data represented as 2D planar meshes with connectivities approximating magnetic field lines along the toroidal dimension in deformed 3D toroidal spaces. Scientific variables (e.g., density and temperature) in these fusion data are interpolated following a complex ...
Congrong Ren, Robert Hager, Randy Michael Churchill, Albert Mollén, Seung‐Hoe Ku, Choong‐Seock Chang, Hanqi Guo   +6 more
wiley   +1 more source