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
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)
