Seminar Details:

LANS Informal Seminar
"Time integration and solver challenges in tokamak edge plasma simulation"

DATE: September 10, 2013

TIME: 15:00:00 - 16:00:00
SPEAKER: Jed Brown, Postdoctoral Appointee, MCS, Argonne National Laboratory
LOCATION: Bldg. 240, Rm. 4301, Argonne National Laboratory

Description:
We present recent experiences integrating PETSc's IMEX time integration and solvers for use in the tokamak edge code BOUT++. We consider challenges and bottlenecks arising in BOUT++ simulation of edge-localized modes and discuss the relative merits of time integration and solver choices from BDF, additive Runge-Kutta, Rosenbrock-W, and extrapolation methods, preconditioning approaches for stiff waves, and solvers for the strongly anisotropic systems arising in tokamak simulation.


 

Please send questions or suggestions to Debojyoti Ghosh: ghosh at mcs dot anl dot gov.