Development of a gyrokinetic-MHD energetic particle simulation code Part II: Linear simulations of Alfv\'en eigenmodes driven by energetic particles
Abstract
We have developed a hybrid code GMEC: Gyro-kinetic Magnetohydrodynamics (MHD) Energetic-particle Code that can numerically simulate energetic particle-driven Alfv\'en eigenmodes and energetic particle transport in tokamak plasmas. In order to resolve the Alfv\'en eigenmodes with high toroidal numbers effectively, the field-aligned coordinates and meshes are adopted. The extended MHD equations are solved with five-points finite difference method and fourth order Runge-Kutta method. The gyrokinetic equations are solved by particle-in-cell (PIC) method for the perturbed energetic particle pressures that are coupled into the MHD equations. Up to now, a simplified version of the hybrid code has been completed with several successful verifications including linear simulations of toroidal Alfv\'en eigenmodes and reversed shear Alfv\'en eigenmodes.
Keywords
Cite
@article{arxiv.2402.14357,
title = {Development of a gyrokinetic-MHD energetic particle simulation code Part II: Linear simulations of Alfv\'en eigenmodes driven by energetic particles},
author = {Z. Y. Liu and P. Y. Jiang and S. Y. Liu and L. L. Zhang and G. Y. Fu},
journal= {arXiv preprint arXiv:2402.14357},
year = {2024}
}
Comments
11 pages, 17 figures