Axisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C1, NIMROD and JOREK

TitleAxisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C1, NIMROD and JOREK
Publication TypeJournal Article
Year of Publication2020
AuthorsI. Krebs, F.J Artola, C.R Sovinec, S.C Jardin, K.J Bunkers, M. Hoelzl, N.M Ferraro
JournalPhysics of Plasmas
Volume27
Issue2
Pagination022505
Abstract

A benchmark exercise for the modeling of vertical displacement events(VDEs) is presented and applied to the 3D nonlinear magneto-hydrodynamic codesM3D-C1, JOREK and NIMROD. The simulations are based on a vertically unstableNSTX equilibrium enclosed by an axisymmetric resistive wall with rectangular crosssection. A linear dependence of the linear VDE growth rates on the resistivity ofthe wall is recovered for sufficiently large wall conductivity and small temperatures inthe open field line region. The benchmark results show good agreement between theVDE growth rates obtained from linear NIMROD and M3D-C1simulations as wellas from the linear phase of axisymmetric nonlinear JOREK, NIMROD and M3D-C1simulations. Axisymmetric nonlinear simulations of a full VDE performed with thethree codes are compared and excellent agreement is found regarding plasma locationand plasma currents as well as eddy and halo currents in the wall.

URLhttps://arxiv.org/abs/1908.02387
DOI10.1063/1.5127664
Division

FP

Department

IMT

PID

c6dd5947070b72b6a34e337edb53b2f1

Alternate TitlePhys. Plasmas
LabelOA

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