Bulletin of the American Physical Society
65th Annual Meeting of the APS Division of Plasma Physics
Monday–Friday, October 30–November 3 2023; Denver, Colorado
Session PP11: Poster Session VI:
MFE:DIII-D and conventional tokamaks II;MHD and stability; Analytic techniques in MFE;
ICF: Pinches and hohlraum physics
SPACE: Astrophysical plasmas
LTP:Low temperature plasma applications
MC:Miniconference: Shocks
2:00 PM - 5:00 PM
Wednesday, November 1, 2023
Room: Plaza ABC
Abstract: PP11.00067 : Modeling neoclassical impurity transport with the full-f gyrokinetic code COGENT*
Presenter:
Alexey R Knyazev
(University of California, San Diego)
Authors:
Alexey R Knyazev
(University of California, San Diego)
Mikhail Dorf
(Lawrence Livermore National Laboratory)
Sergei I Krasheninnikov
(University of California, San Diego)
The poster reviews multi-species linearized collision operator [13], based on the approach proposed by Kolesnikov [14], in the continuum full-f gyrokinetic code COGENT. The operator is based on the Landau operator and preserves the dependence of the Coulomb mean free path on a relative velocity of colliding species. This enables to recover Braginskii thermal force in the COGENT simulations of highly collisional plasmas.
We analyze simulation results with the Braginskii fluid model, show that COGENT recovers friction and thermal forces, and present study of the neoclassical impurities transport using the new collision operator.
This work was supported by the U.S. DoE under Award No. DE-SC0016548 at UCSD, and under Contract No. DE- AC52–07NA27344 at LLNL.
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*
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