1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Interaction of large scale flow structures with gyrokinetic turbulence
Rent:
Rent this article for
USD
10.1063/1.3656947
/content/aip/journal/pop/18/11/10.1063/1.3656947
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/11/10.1063/1.3656947
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Diffusivity versus shearing rate for pure poloidal flow (large circles) and for pure toroidal flows (squares) and for the (a) Cyclone case and (b) Waltz standard case. In the left subplot, quadratic fits of these points are shown (solid lines, extreme cases with complete stabilisation have been omitted from the fit), with maximum ITG growth rate for these cases shown as a dashed line (small circles).

Image of FIG. 2.
FIG. 2.

Flux versus time and radius for the Cyclone-like simulations with background shear (a) 0.1a/cs and (b) −0.1a/cs .

Image of FIG. 3.
FIG. 3.

(Color online) The mean position of the heat flux profile, 〈rΛ〉/〈Λ〉, as a function of shearing rate. A linear fit is show for comparison.

Image of FIG. 4.
FIG. 4.

(Color online) Components of poloidal flow for simulations with an imposed V-shaped poloidal flow (a) and toriodal flow (b) with ω  = 0.2. The initial profiles and those at the end of the simulation are shown as thin lines and thick lines, respectively.

Image of FIG. 5.
FIG. 5.

(Color online) ITG growth rate versus imposed flow shear amplitude for “V-shaped” flow profile.

Image of FIG. 6.
FIG. 6.

(Color online) Gyrocentre flux versus radius, normalised to maximum heat flux, for V-shaped profiles, with R/LT  = 6.94.

Image of FIG. 7.
FIG. 7.

(Color online) Diffusivity versus large-scale shearing rate, , for simulations with an imposed V-shaped poloidal flow (a) and toriodal flow (b). Diamonds show initial and squares show averaged over the last half of the simulation. The parabola is the fit from 1, where a homogeneous flow was imposed.

Image of FIG. 8.
FIG. 8.

(Color online) Profiles of temperature gradient fluctuations (thin line) and the radial derivative of the zonal potential (thick line) versus radius, averaged over the last 60a/cs of an ITG simulation without a heat source.

Loading

Article metrics loading...

/content/aip/journal/pop/18/11/10.1063/1.3656947
2011-11-09
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interaction of large scale flow structures with gyrokinetic turbulence
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/11/10.1063/1.3656947
10.1063/1.3656947
SEARCH_EXPAND_ITEM