Particle-in-cell code and Poisson equation solver parallelisation

0438779 - ÚFP 2015 CZ eng A - Abstrakt
Podolník, Aleš - Komm, Michael - Dejarnac, Renaud - Pánek, Radomír - Gunn, J. P.
Particle-in-cell code and Poisson equation solver parallelisation.
Symposium on Plasma Physics and Technology 2014. Prague: Czech Technical University in Prague, Faculty of Electrical Engineering, 2014.
[SPPT 2014 - 26th Symposium on Plasma Physics and Technology/26./. 16.06.2014-19.06.2014, Prague]
Institucionální podpora: RVO:61389021
Klíčová slova: Particle-in-cell * Poisson equation * parallelisation
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://fyzika.feld.cvut.cz/misc/ppt/articles/2014/ppt-abstracts-1n2v.pdf

Numerical simulations based on PIC technique like the SPICE2 model developed at IPP ASCR are often used in tokamak plasma physics to investigate the interaction of edge plasma with plasma-facing components. The SPICE2 model has been parallelised with the exception of the Poisson equation solver, which considerably slows down the simulations. It is now being upgraded to a parallelised version to be efficient enough to perform more demanding tasks like the ITER tokamak baseline scenario edge plasma, which is characterized by very high density (up to 1020 m-3) and low temperature (1–2 eV).This leads to extremely small Debye length (10-7 m) and enormous grids (thousands of cells in each direction).This in combination with a shallow magnetic field inclination (1 – 2 deg.)results in simulations taking several months to compute. Performance and scaling are compared for different solvers using the Helios IFERC supercomputer in order to choose the optimal candidate for specific conditions.
Trvalý link: http://hdl.handle.net/11104/0242163