Metric coefficients for the flux surface of ASDEX upgrade shot 20431 during its low power phase.
Two-dimensional growth rate spectrum (in units of ) in the ASDEX upgrade -mode edge for shot 20431. The largest growth rates are obtained for finite radial wavenumbers.
Absolute value of local shear . Changes in sign are visible as dark lines.
Tilting of radial structures due to negative magnetic shear.
Parallel profile of the ETG-induced (electrostatic) electron heat flux .
Two-dimensional wavenumber spectrum of the ETG-induced (electrostatic) electron heat flux . In contrast to the linear growth rates, the transport peaks around .
Electron heat diffusivity for different electron temperature gradients. The obtained diffusivities are of the order of the experimentally measured values.
Numerical determination of the bad curvature component via field-line tracing (solid line) and an MHD approach (dashed line), validating the GIST code.
(Top) Ion heat diffusivity (in units of ) as a function of the ion temperature gradient . (Bottom) Linear growth rate of the most dominant mode (in units of ) vs .
Time traces of the ion heat flux for the W7-X (hm) configuration. The lower curve depicts the standard simulation, whereas the upper one the simulation with zeroed out zonal flows.
Comparison of the ion heat flux for the (lm) configuration (upper line) and for the (hm) configuration (lower line).
(Top) Time traces of the ion heat flux for the banana tube (lower line) and the bullet tube (upper line). (Bottom) Parallel mode structure of the same quantity for both tubes.
Plasma parameters for the flux surface of ASDEX upgrade shot 20431 during its low power phase. The values are slightly different from those in Ref. 12 since an updated set of parameters was used.
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