SMuK 2021 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 17: Poster II
P 17.30: Poster
Freitag, 3. September 2021, 14:00–16:00, P
Semilagrangian hybrid kinetic/driftkinetic code for the studying of fusion plasmas — •Aleksandr Mustonen1, Felipe Nathan de Oliveira1, Ken Hagiwara2, Karen Pommois1, Florian Allman-Rahn3, Simon Lautenbach3, Rainer Grauer3, and Daniel Told1 — 1Max-Planck-Institut für Plasmaphysik — 2Ludwig-Maximilians-Universität München — 3Ruhr-Universität Bochum
Modeling of the tokamak edge plasma is one of the most important problems we have to solve to achieve understanding of physics, taking place in the device. A lot of currently existing and well known codes used by the community employ gyrokinetic system of equations. This is a framework to resolve kinetic equations on a reduced 5D space, applicable for charged particles moving in a strong background magnetic field and valid until the phenomena scale gets as small as the Larmor radius. Presence of steep gradients at the edge region prevents us from usage of GK models in their present state.
One of the ways to avoid this complication is to use a fully kinetic 6D framework. However, the immense computational cost of such a direct approach makes it ill-suited for longtime simulations. Here we discuss the hybrid framework and its implementation in the ssV: a semi Lagrangian electrostatic code with fully kinetic ions and driftkinetic electrons to completely resolve ion physics and save computational resources on electrons, while retaining the most important kinetic effects. New found hybrid wave explained with the help of analytical dispersion solver FIDEL. Slab ITG testcase discussed.