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DTSTAMP:20220812T074357Z
LOCATION:Darwin Room
DTSTART;TZID=Europe/Stockholm:20220629T140000
DTEND;TZID=Europe/Stockholm:20220629T160000
UID:submissions.pasc-conference.org_PASC22_sess153@linklings.com
SUMMARY:MS6G - High Performance Computing in Kinetic Simulations of Plasma
 s - Part III: Advanced Numerical Methods and Algorithms
DESCRIPTION:Minisymposium\n\nRecent advances in cutting-edge physics appli
 cations of kinetic theory in magnetized plasmas will be presented. Plasmas
  are subject to a multitude of collective effects including electromagneti
 c global modes, instabilities and turbulence, which span several orders of
  magnitude in space and time scales. Various dynamically reduced approache
 s, such as gyrokinetics or hybrid fluid-kinetic, have been developed to ci
 rcumvent some of these difficulties, but even with these reductions the pr
 oblem remains extremely challenging. Thanks to progresses in numerical met
 hods, algorithmic development, massive parallelization schemes enabling th
 e efficient use of the most powerful HPC platforms, numerical simulations 
 have achieved increasing levels of realism, making scientific application 
 studies nowadays possible that were previously out of reach. This session 
 represents the third and last part of this minisymposium on simulations of
  plasmas and is dedicated to the ongoing effort in developing innovative n
 umerical methods for carrying out efficient, flexible and robust kinetic s
 imulations. The set of four presentations will in particular focus on rece
 nt efforts in developing various alternative Eulerian-based schemes for ca
 rrying out gyrokinetic simulations of the edge region of tokamak plasmas. 
 Among others, these talks will address discontinuous Galerkin and high ord
 er finite volume discretization, block-structured grids, as well as polyno
 mial basis representations.\n\nContinuum Kinetic Simulations of Tokamak Ed
 ge Plasmas with COGENT\n\nRicketson, Dorr, Dorf, Ghosh\n\nWe present progr
 ess on the COGENT code, designed to simulate kinetic edge plasmas in tokam
 aks in complex geometries spanning both sides of the magnetic separatrix. 
  The high-order finite volume methods for the gyrokinetic system and mappe
 d multiblock geometries intrinsic to the code will be reviewed...\n\n-----
 ----------------\nInvestigating Magnetic Fluctuations in Gyrokinetic Simul
 ations of the Tokamak Scrape-Off Layer using Discontinuous Galerkin Method
 s\n\nMandell, Hammett, Hakim, Francisquez\n\nGkeyll, a full-f continuum el
 ectromagnetic gyrokinetic code, is being developed to study turbulence in 
 the edge region of fusion devices. The edge region involves large-amplitud
 e fluctuations, electromagnetic effects, and plasma interactions with mate
 rial walls, making it more computationally challe...\n\n------------------
 ---\nCollisional Full-F Electromagnetic Gyrokinetic Turbulence Simulations
  of the Edge and Scrape-Off Layer with GENE-X\n\nUlbl, Michels, Stegmeir, 
 Jenko\n\nThe future development of magnetic confinement fusion devices dep
 ends on the understanding of turbulent transport in the edge and scrape-of
 f layer (SOL). Gyrokinetic simulations count among the main tools used in 
 simulations of the plasma core, but additional challenges are imposed in t
 he edge and S...\n\n---------------------\nGyrokinetic Nonlinear Simulatio
 ns of Turbulent Transport based on a Hermite-Laguerre Moments Approach and
  Different Collision Models\n\nHoffmann, Frei, Ricci\n\n<em>We present the
  first nonlinear gyrokinetic simulations based on a moment approach, which
  exploits the Hermite-Laguerre decomposition of the ion and electron distr
 ibution functions. The simulations are used to evolve turbulence in a loca
 l Z-pinch configuration and are accurately benchmarked again...\n\n\nDomai
 n: Computer Science and Applied Mathematics, Physics
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