"FENICIA: A New 3D Code for a General Class of Plasma Models using a New Approach to Field-aligned Coordinate Systems"
Event details
| Date | 15.05.2013 |
| Hour | 10:30 |
| Speaker | Dr. F. Hariri, IRFM/SCCP - CEA Cadarache, France |
| Location |
PPB 019
|
| Category | Conferences - Seminars |
This work illustrates a new approach to field-aligned coordinates which is not based on flux variables. The method is implemented in a newly developed 3D code that called FENICIA that solves a broad class of plasma models ranging from the Hasegawa-Mima equation up to the kinetic equations. I first present the features of the new code I developed, and show how the new method has a number of advantages over methods constructed starting from flux coordinates, allowing for more flexible coding in a variety of situations including X-point configurations. The accuracy of the approach is tested in particular with respect to the question of spurious radial transport, an obvious concern when abandoning flux coordinates. In this regard, I also show that numerical radial diffusion can be easily kept under control with the choice of suitable algorithms, at a minimal computational cost. Then, tests on a 3D model for Ion Temperature Gradient (ITG) driven turbulence in cylindrical geometry demonstrate that the method is well suited to exploit the flute property of small parallel gradients by minimizing the number of degrees of freedom needed to treat a given problem in an accurate and efficient manner. Finally, simulations in the nonlinear turbulent regime allow one to recover, at reduced numerical cost, the standard features of slab ITG turbulence.
Practical information
- Informed public
- Free
Organizer
- Prof. P. Ricci, CRPP
Contact
- Prof. P. Ricci, CRPP