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A geometry interface for gyrokinetic microturbulence investigations in toroidal configurations
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View: Figures


Image of FIG. 1.
FIG. 1.

Comparison of metric components and the magnetic field modulus for NCSX between the FLT (line) and MHD (points) approaches, after the rescalings suggested by Eqs. (88)–(90).

Image of FIG. 2.
FIG. 2.

Numerical validation of Eq. (97) (left) and Eq. (100) (right) for NCSX between FLT (line) and MHD (points) approaches.

Image of FIG. 3.
FIG. 3.

Numerical comparison of the bad curvature component for NCSX via the MHD (line) and FLT (points) methods.

Image of FIG. 4.
FIG. 4.

Scan of growth rates (left) and frequencies (right) over the binormal wavenumber for NCSX using the FLT (line) and MHD (points) settings (, is the sound speed, is the ion Larmor frequency, and is the minor radius).

Image of FIG. 5.
FIG. 5.

Numerical evaluation of magnetic shear. The ratio of the metrics (line) is fitted by a straight line (points). The plot in plot presents the same, restricted in the range .

Image of FIG. 6.
FIG. 6.

A typical parallel structure of the local shear for NCSX.

Image of FIG. 7.
FIG. 7.

Comparison of the anomalous ion heat diffusivity between NCSX (boxes) and DIII-D (line). For the stellarator case, we select five different flux tubes along the toroidal Boozer angle, the first being identical to the fifth, in view of the threefold toroidal symmetry.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A geometry interface for gyrokinetic microturbulence investigations in toroidal configurations