@inproceedings{145d539f251a48e69dbe40fe20f5830d,
title = "Equilibrium flows in non-linear MHD simulations of x-point plasmas",
abstract = "In non-linear MHD simulations of ELMs [1], a radially localised, toroidally symmetric, poloidal flow layer exists in the H-mode pedestal region. This sheared flow layer could have a significant influence on the linear stability properties of MHD instabilities and their non-linear evolution. Using the non-linear MHD simulation code JOREK [1] with reduced resistive MHD equations, we study the edge-localised poloidal flow in both circular and X-point tokamak plasmas at equilibrium (toroidal symmetry). For the circular case, an analytical interpretation is derived. In the simulations of X-point plasmas, the flow can have both m = 0 and m = 1 components. In fact, abrupt transitions take place between the two equilibrium states, accompanied by a strong increase in the kinetic energy. Similar transitions between equilibrium flow states have been predicted by Strauss [2] for m = 0 poloidal flow patterns. Scalings are obtained for both the m = 1 and m = 0 flows.",
keywords = "Plasma dynamics and flow, Plasma simulation, Ideal and resistive MHD modes, kinetic modes",
author = "S. Pamela and G.T.A. Huysmans",
year = "2008",
month = nov,
day = "1",
doi = "10.1063/1.3033721",
language = "English",
isbn = "978-0-7354-0600-1",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics",
pages = "318--324",
editor = "X. Garbet",
booktitle = "Theory of fusion plasmas : joint Varenna-Lausanne international workshop, Varenna, Italy, 25-29 August 2008",
address = "United States",
}