BEGIN:VCALENDAR
VERSION:2.0
PRODID:Linklings LLC
BEGIN:VTIMEZONE
TZID:Europe/Stockholm
X-LIC-LOCATION:Europe/Stockholm
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700308T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701101T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20190719T085744Z
LOCATION:HG E 1.1
DTSTART;TZID=Europe/Stockholm:20190613T111500
DTEND;TZID=Europe/Stockholm:20190613T114500
UID:submissions.pasc-conference.org_PASC19_sess159_msa288@linklings.com
SUMMARY:Kinetic Edge Plasma Simulation using a Continuum Model
DESCRIPTION:Minisymposium\nComputer Science and Applied Mathematics, Physi
 cs\n\nKinetic Edge Plasma Simulation using a Continuum Model\n\nHittinger,
  Dorr, Dorf, Ghosh, Ricketson\n\nWe present an overview of our progress in
  the simulation of tokamak edge plasmas described by a continuum kinetic m
 odel.  The numerical challenges resulting from high dimensionali
 ty, strong anisotropy, multiple time scales and complicated geometry have 
 motivated the development of new algorithmic approaches, which we have imp
 lemented in our COGENT code.   By combining a high-order, mapped
 -multiblock, finite-volume discretization of phase space with an Additive 
 Runge-Kutta (ARK) approach, we achieve the consistent integration of syste
 ms including the phase space advection of multiple ion species coupled via
  an electrostatic field to electrons described by adiabatic, fluid or kine
 tic models.   We are addressing a hierarchy of time scales in th
 e ARK framework using a multiphysics preconditioning approach in the Jacob
 ian-free, Newton-Krylov nonlinear system solves performed in the implicit 
 stages, which has enabled the first-ever continuum kinetic simulation of s
 elf-consistent electrostatic fields in a realistic edge geometry spanning 
 both sides of the magnetic separatrix.  To further reduce the ex
 pense of phase space discretization, we have also begun to develop a spars
 e grid capability compatible with our finite volume strategy.  W
 e also describe our recent work extending our initial axisymmetric (2D+2V)
  implementation to the 5D (3D+2V) capability required for edge turbulence 
 simulation. 4527607968-3
END:VEVENT
END:VCALENDAR