Initial SOL turbulence results from the Gkeyll code, including the first electromagnetic SOL simulations.

ASDEX Upgrade Seminar

  • Date: Jan 27, 2020
  • Time: 12:20 PM - 01:30 PM (Local Time Germany)
  • Speaker: Greg Hammett
  • Location: Garching
  • Room: Seminarraum L6, 2.Stock Süd
  • Host: IPP
Greg Hammett: Initial SOL turbulence results from the Gkeyll code, including the first electromagnetic SOL simulations
We show some initial results for SOL turbulence in NSTX [2,3] and the Texas Helimak [4] from the Gkeyll gyrokinetic code [1], a full-F continuum gyrokinetic code that uses Discontinuous Galerkin methods to help handle the computational challenges of the edge region. The code has recently been extended from the electrostatic case to include electromagnetic fluctuations [4], with a sheath boundary condition that allows currents to flow into and out of the divertor plates. To our knowledge, these simulations are the first gyrokinetic simulations on open field lines to include electromagnetic effects. We welcome discussion on fruitful ways to compare with ASDEX-U SOL data.

[1] A. Hakim et al. (2019), "Discontinuous Galerkin schemes for a class of Hamiltonian evolution equations with applications to plasma fluid and kinetic problems" https://arxiv.org/abs/1908.01814

[2] N. R. Mandell et al. (2019), "Electromagnetic full-f gyrokinetics in the tokamak edge with discontinuous Galerkin methods", https://arxiv.org/abs/1908.05653

[3] E.L. Shi et al. (2019), "Full-f gyrokinetic simulation of turbulence in a helical open-field-line plasma", Physics of Plasmas 26, 012307.

[4] T.N. Bernard et al. (2019), "Gyrokinetic continuum simulations of plasma turbulence in the Texas Helimak", Phys. Plasmas 26, 042301.
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