"A simulation effort of turbulent transport in the edge and SOL plasma of tokamaks"
Event details
| Date | 17.02.2014 |
| Hour | 10:30 › 11:30 |
| Speaker |
Dr. Eric Serre Universite Aix-Marseille, Marseille, F |
| Location |
PPB 019
|
| Category | Conferences - Seminars |
The external core plasma touching the last closed magnetic field surface (LCFS) and the scrape-off layer governs the plasma-surface interactions and controls tokamaks performances. The temperature and density pedestal of the high confinement regime (H-mode) builds up in this region and contributes to more than 1/3 of the stored energy. Furthermore, this region couples the source of particles and momentum to the core plasma, while it also couples the ash and energy produced in the core to the sinks in the divertor.
Our simulation effort concerns the turbulent transport mechanisms at the edge that rule the interaction between the scrape-off layer and the confined plasma. The presentation will show our effort to design a family of turbulent transport codes that solves fluid equations in versatile geometries from 2D diffusive regimes to 3D turbulent ones. Coupled to the neutral Monte-Carlo code EIRENE, the code capabilities will be illustrated in 2D diffusive regimes by preliminary investigation of density regimes and heat fluxes distribution in the WEST configuration, which is a tungsten upgrading of Tore Supra to support ITER divertor design. Finally, the parallel Kelvin-Helmholtz like instability triggered at the core/SOL transition and interchange turbulent flows for limited circular plasmas will be investigated. Such simulations should provide a better understanding of poloidal turbulence asymmetries and also to validate our codes both with respect to theoretical stability results and to the well-documented experimental Mistral base case.
Our simulation effort concerns the turbulent transport mechanisms at the edge that rule the interaction between the scrape-off layer and the confined plasma. The presentation will show our effort to design a family of turbulent transport codes that solves fluid equations in versatile geometries from 2D diffusive regimes to 3D turbulent ones. Coupled to the neutral Monte-Carlo code EIRENE, the code capabilities will be illustrated in 2D diffusive regimes by preliminary investigation of density regimes and heat fluxes distribution in the WEST configuration, which is a tungsten upgrading of Tore Supra to support ITER divertor design. Finally, the parallel Kelvin-Helmholtz like instability triggered at the core/SOL transition and interchange turbulent flows for limited circular plasmas will be investigated. Such simulations should provide a better understanding of poloidal turbulence asymmetries and also to validate our codes both with respect to theoretical stability results and to the well-documented experimental Mistral base case.
Practical information
- Informed public
- Free
Organizer
- Prof. P. Ricci
Contact
- Prof. P. Ricci