Hermes: Global plasma edge fluid turbulence simulations
Abstract
The transport of heat and particles in the relatively collisional edge regions of magnetically confined plasmas is a scientifically challenging and technologically important problem. Understanding and predicting this transport requires the self-consistent evolution of plasma fluctuations, global profiles and flows, but the numerical tools capable of doing this in realistic (diverted) geometry are only now being developed. Here a 5-field reduced 2-fluid plasma model for the study of instabilities and turbulence in magnetised plasmas is presented, built on the BOUT++ framework. This cold ion model allows the evolution of global profiles, electric fields and flows on transport timescales, with flux-driven cross-field transport determined self-consistently by electromagnetic turbulence. Developments in the model formulation and numerical implementation are described, and simulations are performed in poloidally limited and diverted tokamak configurations.
Cite
@article{arxiv.1609.03360,
title = {Hermes: Global plasma edge fluid turbulence simulations},
author = {Ben Dudson and Jarrod Leddy},
journal= {arXiv preprint arXiv:1609.03360},
year = {2017}
}
Comments
Joint Varenna-Lausanne international workshop on Theory of Fusion Plasmas