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Synergy of turbulent and neoclassical transport through poloidal convective cells

The role of poloidal convective cells—i.e. low frequency axisymmetric modes the electric potential—on transport processes is studied with full-F gyrokinetic code GYSELA. In order to understand impact cells, we apply a numerical filter cells and …

Neoclassical impurity flux in presence of turbulent generated poloidal asymmetries and pressure anisotropy

Poloidal asymmetries of impurities are commonly observed experimentally. Density asymmetry is already known to impact significantly the neoclassical prediction impurity fluxes. In this article, effect pressure and anisotropy on flux derived …

Immersed boundary conditions in global, flux-driven, gyrokinetic simulations

A penalization technique is applied in global and flux driven gyrokinetic simulations to model a limiter configuration. The immersed boundary implemented terms of restoring force cold distribution function. It acts as perfect heat absorber. Parallel …

Contribution of kinetic electrons to GAM damping

An approach to increase reliability of HPC simulation, application to the GYSELA5D code

Optimization of the gyroaverage operator based on Hermite interpolation

An asynchronous writing method for restart files in the GYSELA code in prevision of exascale systems

Scaling gysela code beyond 32K-cores on bluegene/Q

Solving the Vlasov equation in complex geometries

Gyrokinetic Semi-Lagrangian Parallel Simulation using a Hybrid OpenMP/MPI programming

This paper describes a parallel implementation of a numerical solver for the Vlasov equation. The solver is based on a kinetic model describing the motion of charged particles in a plasma. The evolution of the distribution of particles in phase space …