Bulletin of the American Physical Society
65th Annual Meeting of the APS Division of Plasma Physics
Monday–Friday, October 30–November 3 2023; Denver, Colorado
Session PP11: Poster Session VI:
MFE:DIII-D and conventional tokamaks II;MHD and stability; Analytic techniques in MFE;
ICF: Pinches and hohlraum physics
SPACE: Astrophysical plasmas
LTP:Low temperature plasma applications
MC:Miniconference: Shocks
2:00 PM - 5:00 PM
Wednesday, November 1, 2023
Room: Plaza ABC
Abstract: PP11.00053 : Analysis of Kelvin-Helmholtz-like instabilities in strongly rotating tokamak plasmas*
Presenter:
Celine Schaumans
(University of York)
Authors:
Celine Schaumans
(University of York)
Jonathan P Graves
(Ecole Polytechnique Federale de Lausanne)
Howard R Wilson
(University of York)
A large aspect ratio magnetohydrodynamic model with sonic ordered flows was therefore used to analyse the driving and damping effects of strong density, temperature, pressure and rotation gradients on the Kelvin-Helmholtz-like instability. Performing an asymptotic expansion for large, sonic toroidal rotation allowed for the parametric dependences of the mode growth to be investigated. These analytic results were additionally compared against a full magnetohydrodynamic code, VENUS-MHD, which was further used to model relevant low magnetic shear NSTX discharges.
[1] C Wahlberg et al 2013 Plasma Phys. Control. Fusion 55 105004
[2] Hao, G.Z., Heidbrink, W.W., Liu, Y.Q., Yang, S.X., Fredrickson, E.D., Podestà, M., & Crocker, N.A. (Oct 2018). Centrifugal Force Driven Low Frequency Modes in Spherical Tokamak (IAEA-CN--258). International Atomic Energy Agency (IAEA)
*This work has been funded by the University of York, EPSRC Centre for Doctoral Training in the Science and Technology of Fusion Energy (reference: EP/S022430/1).
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