Speaker
Dr
Klaus Hallatschek
(Max-Planck-Institute for Plasma Physics)
Description
Gyrokinetic and non-local fluid codes have complementary limitations in the tokamak
edge. To arrive at a common basis, the gyrokinetic code CGYRO and the non-local
two-fluid code NLET have both been applied to identical parameters sets ranging from
resistive ballooning turbulence - approaching the collisional fluid limit - relevant
to the edge of a tokamak, up to high-gradient kinetic ITG modes at higher
temperatures in the core-edge transitional regime, yielding comparable results. As a
non-trivial, novel result, linear growth rate and nonlinear transport agree between
the codes in the fluid limit of high collision numbers (nu_e~500-10000 c_i/R), not
least, because the kinetic code employs the Sugama collision operator with momentum
and energy conservation, Galileian invariance and exact self-adjointness property.
| Country or International Organization | Germany |
|---|---|
| Paper Number | TH/P8-1 |
Primary author
Dr
Klaus Hallatschek
(Max-Planck-Institute for Plasma Physics)
