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Title: Validation of extended magnetohydrodynamic simulations of the HIT-SI3 experiment using the NIMROD code

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/1.4997944 · OSTI ID:1515035
 [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1]
  1. Univ. of Washington, Seattle, WA (United States). Dept. of Aeronautics and Astronautics
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The HIT-SI3 experiment uses a set of inductively driven helicity injectors to apply a non-axisymmetric current drive on the edge of the plasma, driving an axisymmetric spheromak equilibrium in a central confinement volume. These helicity injectors drive a non-axisymmetric perturbation that oscillates in time, with relative temporal phasing of the injectors modifying the mode structure of the applied perturbation. A set of three experimental discharges with different perturbation spectra are modelled here using the NIMROD extended magnetohydrodynamics code, and comparisons are made to both magnetic and fluid measurements. These models successfully capture the bulk dynamics of both the perturbation and the equilibrium, though disagreements related to the pressure gradients experimentally measured exist.

Research Organization:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE
Grant/Contract Number:
FG02-96ER54361; AC02-05CH11231
OSTI ID:
1515035
Alternate ID(s):
OSTI ID: 1413824
Journal Information:
Physics of Plasmas, Vol. 24, Issue 12; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (2)

Dynamic mode decomposition for plasma diagnostics and validation journal May 2018
Formation of closed flux surfaces in spheromaks sustained by steady inductive helicity injection journal May 2019

Figures / Tables (25)

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