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Characteristics of turbulence-driven plasma flow and origin of experimental empirical scalings of intrinsic rotation
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10.1063/1.3575162
/content/aip/journal/pop/18/4/10.1063/1.3575162
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/4/10.1063/1.3575162
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Radial profile of toroidal momentum density at three different times (left), and time history of volume-integrated toroidal momentum (with three marks corresponding to the three curves in the left panel), and turbulence intensity at a central location (right).

Image of FIG. 2.
FIG. 2.

(Color online) CTEM-driven total intrinsic torque (spatially averaged) vs electron pressure gradient .

Image of FIG. 3.
FIG. 3.

(Color online) CTEM-driven total intrinsic torque and volume-integrated turbulence intensity at steady state vs plasma current I p (top-left), and radial profiles of q and dq/dr of the four equilibria used in this scan (top-right); CTEM-driven particle fluxes vs time at a central radial location where dominant CTEM fluctuations are present (upper-middle-left), and steady state electron heat fluxes vs (upper-middle-right); spatio-temporal evolution of spectrum-averaged parallel wavenumber— for two cases with I p  = 1.5 MA (lower-middle-left) and I p  = 0.75 MA (lower-middle-right); and spatio-temporal evolution of zonal flow shearing rate for I p  = 1.5 MA (bottom-left) and I p  = 0.75 MA (bottom-right).

Image of FIG. 4.
FIG. 4.

(Color online) CTEM-driven total intrinsic torque vs q value averaged over the central core region (upper-left) and the corresponding radial profiles of q and dq/dr for the three equilibria used for these simulations (upper-right), and spatio-temporal evolution of spectrum-averaged for two cases with (lower-left) and (lower-right).

Image of FIG. 5.
FIG. 5.

(Color online) CTEM-driven total intrinsic torque vs the radial variation of q averaged over the central core region (top-left), and radial profiles of mean residual stress at steady state (top-right); corresponding radial profiles of q (middle-left) and dq/dr (middle-right) for the three equilibria used for these simulations; spatio-temporal evolution of spectrum-averaged for two cases with averaged dq/dr = 0.9 (bottom-left) and dq/dr = 2.2 (bottom-right).

Image of FIG. 6.
FIG. 6.

Ratio of momentum generation rate and heat transport rate vs dq/dr. This is from the same simulations as those of Fig. 5.

Image of FIG. 7.
FIG. 7.

Total intrinsic torque vs external magnetic field B vac in CTEM turbulence.

Image of FIG. 8.
FIG. 8.

(Color online) Time history of parallel flow (upper-left), electron density (upper-right), and ion temperature (lower-left) at three radial locations, and spatio-temporal evolution of electron temperature (lower-right) illustrating the generic pinch phenomenon in CTEM turbulence. For illustration purpose, three curves for each quantity of , , and at three radial locations are displaced in the direction of the vertical axis. Actually, they all start from zero initially.

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/content/aip/journal/pop/18/4/10.1063/1.3575162
2011-04-21
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Characteristics of turbulence-driven plasma flow and origin of experimental empirical scalings of intrinsic rotation
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/4/10.1063/1.3575162
10.1063/1.3575162
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