Multiscale modeling approach for radial particle transport in large-scale simulations of the tokamak plasma edge

Felix Hasenbeck , Dirk Reiser , Philippe Ghendrih (1) , Yannick Marandet (2) , Patrick Tamain (1, 2) , Annette Moeller , Detlev R Reiter (3)

1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
2 PIIM - Physique des interactions ioniques et moléculaires
3 IEK-4 - Institute of Energy and Climate Research - Plasma Physics

A multiscale model for an improved description of radial particle transport described by the density continuity equation in large-scale plasma edge simulations for tokamak fusion devices is presented. It includes the effects of mesoscale drift-fluid dynamics on the macroscale profiles and vice versa. The realization of the multiscale model in form of the coupled code system B2-ATTEMPT is outlined. A procedure employed to efficiently determine the averaged mesoscale terms using a nonparametric trend test, the Reverse Arrangements Test, is described. Results of stationary, self-consistent B2-ATTEMPT simulations are compared to prior simulations for experiments at the TEXTOR tokamak, making a first evaluation of the predicted magnitude of radial particle transport possible.

Domaines: Physique [physics]

Felix Hasenbeck, Dirk Reiser, Philippe Ghendrih, Yannick Marandet, Patrick Tamain, et al.. Multiscale modeling approach for radial particle transport in large-scale simulations of the tokamak plasma edge. INTERNATIONAL CONFERENCE ON COMPUTATIONAL SCIENCE, ICCS 2015 COMPUTATIONAL SCIENCE AT THE GATES OF NATURE, 2015, Unknown, Unknown Region. pp.1128-1137, ⟨10.1016/j.procs.2015.05.282⟩. ⟨hal-01455294⟩