Tokamak free-boundary plasma equilibrium computations in presence of non-linear materials
Abstract
We consider the axisymmetric formulation of the equilibrium problem
for a hot plasma in a tokamak. We adopt a non-overlapping mortar element approach, that couples C0 piece-wise linear Lagrange finite elements in a region that
does not contain the plasma and C1 piece-wise cubic reduced Hsieh-Clough-Tocher
finite elements elsewhere, to approximate the magnetic flux field on a triangular
mesh of the poloidal tokamak section. The inclusion of ferromagnetic parts is sim-
plified by assuming that they fit within the axisymmetric modeling and a new
formulation of the Newton algorithm for the problem solution is stated.
Domains
Modeling and Simulation
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