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Title: Axisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C 1 , NIMROD, and JOREK

Abstract

A benchmark exercise for the modeling of vertical displacement events (VDEs) is presented and applied to the 3D nonlinear magnetohydrodynamic codes M3D-C 1, JOREK, and NIMROD. The simulations are based on a vertically unstable NSTX equilibrium enclosed by an axisymmetric resistive wall with a rectangular cross section. A linear dependence of the linear VDE growth rates on the resistivity of the wall is recovered for sufficiently large wall conductivity and small temperatures in the open field line region. We report the benchmark results show good agreement between the VDE growth rates obtained from linear NIMROD and M3D-C 1 simulations and from the linear phase of axisymmetric nonlinear JOREK, NIMROD, and M3D-C 1 simulations. Axisymmetric nonlinear simulations of a full VDE performed with the three codes are compared, and an excellent agreement is found regarding the plasma location and plasma currents, as well as eddy and halo currents in the wall.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [4]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); FOM Institute DIFFER—Dutch Institute for Fundamental Energy Research, Eindhoven (Netherlands)
  2. ITER Organization, Route de Vinon sur Verdon, 13067 St. Paul Lez Durance Cedex, France
  3. University of Wisconsin-Madison, Madison, Wisconsin 53706-1609, USA
  4. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  5. Univ. of Wisconsin, Madison, WI (United States)
  6. Max Planck Inst. for Plasma Physics, Garching (Germany)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
EUROfusion Consortium; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21). Scientific Discovery through Advanced Computing (SciDAC)
OSTI Identifier:
1597983
Alternate Identifier(s):
OSTI ID: 1598079
Grant/Contract Number:  
[AC02-09CH11466; SC0018001; AC02-05CH11231; 633053; WP19-20-ERG-DIFFER/Krebs]
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
[ Journal Volume: 27; Journal Issue: 2]; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Krebs, I., Artola, F. J., Sovinec, C. R., Jardin, S. C., Bunkers, K. J., Hoelzl, M., and Ferraro, N. M. Axisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C1 , NIMROD, and JOREK. United States: N. p., 2020. Web. doi:10.1063/1.5127664.
Krebs, I., Artola, F. J., Sovinec, C. R., Jardin, S. C., Bunkers, K. J., Hoelzl, M., & Ferraro, N. M. Axisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C1 , NIMROD, and JOREK. United States. doi:10.1063/1.5127664.
Krebs, I., Artola, F. J., Sovinec, C. R., Jardin, S. C., Bunkers, K. J., Hoelzl, M., and Ferraro, N. M. Thu . "Axisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C1 , NIMROD, and JOREK". United States. doi:10.1063/1.5127664.
@article{osti_1597983,
title = {Axisymmetric simulations of vertical displacement events in tokamaks: A benchmark of M3D-C1 , NIMROD, and JOREK},
author = {Krebs, I. and Artola, F. J. and Sovinec, C. R. and Jardin, S. C. and Bunkers, K. J. and Hoelzl, M. and Ferraro, N. M.},
abstractNote = {A benchmark exercise for the modeling of vertical displacement events (VDEs) is presented and applied to the 3D nonlinear magnetohydrodynamic codes M3D-C1, JOREK, and NIMROD. The simulations are based on a vertically unstable NSTX equilibrium enclosed by an axisymmetric resistive wall with a rectangular cross section. A linear dependence of the linear VDE growth rates on the resistivity of the wall is recovered for sufficiently large wall conductivity and small temperatures in the open field line region. We report the benchmark results show good agreement between the VDE growth rates obtained from linear NIMROD and M3D-C1 simulations and from the linear phase of axisymmetric nonlinear JOREK, NIMROD, and M3D-C1 simulations. Axisymmetric nonlinear simulations of a full VDE performed with the three codes are compared, and an excellent agreement is found regarding the plasma location and plasma currents, as well as eddy and halo currents in the wall.},
doi = {10.1063/1.5127664},
journal = {Physics of Plasmas},
number = [2],
volume = [27],
place = {United States},
year = {2020},
month = {2}
}

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