A simple model of intrinsic rotation in high confinement regime tokamak plasmas

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3339909· OSTI ID:21347188

Guercan, Oe D ^[1]; Diamond, P H; McDevitt, C J ^[2]; Hahm, T S ^[3]

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1. Laboratoire de Physique des Plasmas, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex (France)
2. Center for Astrophysics and Space Sciences, University of California, San Diego, 9500 Gilman Dr., La Jolla, California 92093-0424 (United States)
3. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543-0451 (United States)

A simple unified model of intrinsic rotation and momentum transport in high confinement regime (H-mode) tokamak plasmas is presented. Motivated by the common dynamics of the onset of intrinsic rotation and the L-H transition, this simple model combines ExB shear-driven residual stress in the pedestal with a turbulent equipartition pinch to yield rotation profiles. The residual stress is the primary mechanism for buildup of intrinsic rotation in the H-mode pedestal, while the pinch drives on-axis peaking of rotation profiles. Analytical estimates for pedestal flow velocities are given in terms of the pedestal width, the pedestal height, and various model parameters. The predicted scaling of the toroidal flow speed with pedestal width is found to be consistent with the International Tokamak Physics Activity database global scaling of the flow speed on-axis with the total plasma stored energy.

• OSTI ID: 21347188
• Journal Information: Physics of Plasmas, Vol. 17, Issue 3; Other Information: DOI: 10.1063/1.3339909; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
H-MODE PLASMA CONFINEMENT
PLASMA
RESIDUAL STRESSES
ROTATION
STORED ENERGY
TOKAMAK DEVICES
UNIFIED MODEL
CLOSED PLASMA DEVICES
CONFINEMENT
ENERGY
MAGNETIC CONFINEMENT
MATHEMATICAL MODELS
MOTION
NUCLEAR MODELS
PHYSICAL PROPERTIES
PLASMA CONFINEMENT
STRESSES
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES