Speaker
Mr
Rajaraman Ganesh
(India)
Description
The use of a generalized weight-based particle simulation scheme suitable for simulating Tokamak plasmas, where the zeroth-order inhomeneity is important is presented. The scheme which is a genaralization of the perturbation schemes developed earlier for particle-in-cell (PIC) simulations, is now capable of handling the full distribution of particles. The new scheme can simulate both the perturbation (delta-f) and the full-F within the same code. Its development is based on the concept of multi-scale expansion which separates the scale lengths of back-ground inhomogeneity from those associated with the perturbations. We will report on the simualtions studies, carried out on the state-of-the-art massively parallel computers, for the Ion Temperature Gradient (ITG)instabilities in the presence of zonal flows and a constant inhomogeneity drive. The physics of the steady state transport in tokamaks will also be discussed.
Country or International Organization of Primary Author
India
Primary author
Mr
Rajaraman Ganesh
(India)
Co-authors
Dr
Janardhan Manickam
(Princeton Plasma Physics Lab, NJ, USA)
Dr
Stephane Ethier
(Princeton Plasma Physics Lab, NJ, USA)
Dr
Wei-li Lee
(Princeton Plasma Physics Lab, NJ, USA)
