Critical transition for the edge shear layer formation: Comparison of model and experiment

Journal Article · Fri Dec 15 00:00:00 EST 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2405344· OSTI ID:20860443

Carreras, B A; Garcia, L; Pedrosa, M A; Hidalgo, C ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 (United States)

The experimental results for the emergence of the plasma edge shear flow layer in TJ-II [C. Alehaldre et al.Fusion Technol. 17, 131 (1990)] can be explained using a simple model for a second-order transition based on the sheared flow amplification by Reynolds stress and turbulence suppression by shearing. In the dynamics of the model, the resistive interchange instability is used. This model gives power dependence on density gradients before and after the transition, consistent with experiment.

• OSTI ID: 20860443
• Journal Information: Physics of Plasmas, Vol. 13, Issue 12; Other Information: DOI: 10.1063/1.2405344; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLIFICATION
BOUNDARY LAYERS
COMPARATIVE EVALUATIONS
FLUCTUATIONS
FLUTE INSTABILITY
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
REYNOLDS NUMBER
SHEAR
STELLARATORS
STRESSES
TURBULENCE