3-D effects on viscosity and generation of toroidal and poloidal flows in LHD

Three-dimensional effects on plasma flows have been experimentally studied in the large helical device with 3D configurations. Spontaneous toroidal flow without net driving force using the combination of perpendicular neutral beam injection (NBI) heating and balanced tangential NBI heating has been...

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Veröffentlicht in:	Physics of plasmas 2013-05, Vol.20 (5)
Hauptverfasser:	Nagaoka, K., Ida, K., Yoshinuma, M., Suzuki, Y., Kamiya, K., Satake, S., Tanaka, K., Yokoyama, M., Murakami, S., Osakabe, M., Takahashi, H., Seki, R., Suzuki, C., Narushima, Y., Nakano, H., Kisaki, M., Ikeda, K., Tsumori, K., Takeiri, Y., Kaneko, O., Yamada, H.
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY BEAM INJECTION HEATING BOUNDARY LAYERS Density ELECTRIC FIELDS FLUCTUATIONS LHD DEVICE MAGNETIC FIELDS MAGNETIC FLUX MAGNETOHYDRODYNAMICS NEUTRAL ATOM BEAM INJECTION PLASMA BEAM INJECTION PLASMA CONFINEMENT PLASMA DENSITY SHEAR STOCHASTIC PROCESSES THREE-DIMENSIONAL CALCULATIONS VISCOSITY
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Zusammenfassung:	Three-dimensional effects on plasma flows have been experimentally studied in the large helical device with 3D configurations. Spontaneous toroidal flow without net driving force using the combination of perpendicular neutral beam injection (NBI) heating and balanced tangential NBI heating has been investigated with two magnetic configurations. Co- and counter-directed spontaneous flows have been observed depending on the collisionality. Toroidal flow shear changes the sign at 0.4
ISSN:	1070-664X 1089-7674
DOI:	10.1063/1.4807126