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Section: New Results

Relaxation method for transport in Tokamak

Participants: M. Boileau, P. Helluy, B. Bramas (Inria Camus).

To apply the relaxation method in a Tokamak context, we have developed a code called Chukrut (in Schnaps) that can handle kinetic relaxation models in Tokamak geometry [15]-[17]-[13]. In the poloidal direction the code uses an unstructured Discontinuous Galerkin solver which solves the transport equation (the main ingredient of the kinetic relaxation method) by using the scheduling graph linked to the upwind scheme. In the toroidal direction we use an exact solver on uniform grids (which will be replaced by a semi-Lagrangian solver). The algorithm is parallelised in the poloidal plane by a task-based OpenMP implementation and in the toroidal direction by MPI parallelism.