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SEQUENCE:0
UID:UW-Physics-Event-8215
DTSTART:20230306T180000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T054755Z
LAST-MODIFIED:20230226T185429Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Predicting the nonlinear properties of three-dimensional magne
tohydrodynamics and the applications to advanced stellarators for fusi
on energy\, Plasma Physics (Physics/ECE/NE 922) Seminar\, Adelle Wrigh
t\, Princeton Plasma Physics Laboratory
DESCRIPTION:Magnetohydrodynamics (MHD) is a nonlinear dynamical system
rich in spatio-temporal complexity\, which models the behaviour of hi
ghly ionised gases (i.e. plasmas) in the continuum limit. Stellarators
\, together with tokamaks\, are the two leading concepts for realising
fusion energy via toroidal magnetic confinement of plasmas\, the macr
oscopic properties of which are described by nonlinear MHD.
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nThis presentation gives an overview of recent advances in understandi
ng and predicting the macroscopic properties of magnetically confined
plasmas\, particularly in the absence of continuous symmetries\, throu
gh new developments in MHD theory and innovations in high-fidelity ext
ended-MHD modelling on leadership-class computing resources\, using th
e M3D-C1 code. We highlight progress toward developing predictive redu
ced models of nonlinear MHD and their applications to improve design c
riteria for next-generation\, optimised stellarators.
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\nA con
sequence of the Hamiltonian nature of magnetic field lines\, the absen
ce of a continuous symmetry in the toroidal direction can have profoun
d impacts on plasma properties in both tokamaks and stellarators. This
makes understanding and predicting nonlinear properties of three-dime
nsional (3D) MHD important for fusion. Clarifying the role of 3D effec
ts is critical for determining when macroscopic instabilities are beni
gn or have the potential to become disruptive.
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URL:https://www.physics.wisc.edu/events/?id=8215
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