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Pré-Publication, Document De Travail Année : 2020

Breaking up-down symmetry with magnetic perturbations in tokamak plasmas: increase of axisymmetric steady-state velocities

Résumé

Plasma rotation plays a crucial role on heat and particle confinement in tokamaks. To consider this issue, we numerically compute the axisymmetric steady states of the visco-resistive magnetohydrodynamic equations including the non-linear (v · ∇)v term using the finite element method. Imposing external n = 0 magnetic perturbations offers a way to break the natural up-down symmetry of the system and produce a net toroidal flow. Using realistic parameters, some numerical results indicate that n = 0 perturbations of the magnetic configuration may be used to increase n = 0 steady-state speeds and promote tokamak plasma confinement whilst preserving axisymmetry.
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Dates et versions

hal-02882218 , version 1 (26-06-2020)
hal-02882218 , version 2 (02-10-2020)

Identifiants

  • HAL Id : hal-02882218 , version 1

Citer

H. Oueslati, M.-C Firpo. Breaking up-down symmetry with magnetic perturbations in tokamak plasmas: increase of axisymmetric steady-state velocities. 2020. ⟨hal-02882218v1⟩
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