NON-LINEAR VISCO-RESISTIVE COLLISIONAL TRANSPORT IN TOROIDAL ELLIPTICAL PLASMAS WITH TRIANGULARITY AND HOLE CURRENTS: A REVIEW

Journal Article · Sun Jul 26 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3204579· OSTI ID:21344362

Martin, Pablo; Castro, Enrique; Puerta, Julio ^[1]

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1. Departamento de Fisica, Universidad Simon Bolivar, Apdo 89000 Caracas 1080 (Venezuela, Bolivarian Republic of)

Non-linear plasma diffusion effects due to hole currents in tokamaks is analyzed in this work. Since the recent discovery of hole currents in tokamaks, this matter has become very important in confinement and instabilities in tokamaks plasmas. The analysis here presented includes non-linear flows as well as hole currents. In the case of low vorticity plasmas our treatment is performed using MHD equations, an it is more suitable for plasmas with very low levels of turbulence, as in the H-mode. The present treatment follows the lines of previous works, and some of the equations and results look like those obtained on these papers. However, the form of the family of the magnetic surfaces is very different to previous treatment, since the hole current modifies those families in a very important way. Elliptic plasmas with triangularity are considered. Pfirsch-Schlueter type currents are obtained for these generalized cases. Diffusion with and without holes are calculated and compared for several values of ellipticity and triangularity. Negative and positive triangularities are considered. In most of the calculations triangularity improves confinement, but the results are different for the positive than for the negative case.

• OSTI ID: 21344362
• Journal Information: AIP Conference Proceedings, Vol. 1154, Issue 1; Conference: 7. symposium on current trends in international fusion research, Washington, DC (United States), 5-9 Mar 2007; Other Information: DOI: 10.1063/1.3204579; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED-PARTICLE TRANSPORT
COLLISIONAL PLASMA
DIFFUSION
ELECTRIC CURRENTS
H-MODE PLASMA CONFINEMENT
MAGNETIC SURFACES
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PLASMA FLUID EQUATIONS
PLASMA INSTABILITY
TOKAMAK DEVICES
TURBULENCE
BOLTZMANN-VLASOV EQUATION
CLOSED PLASMA DEVICES
CONFINEMENT
CURRENTS
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
MAGNETIC CONFINEMENT
MAGNETIC FIELD CONFIGURATIONS
MECHANICS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA CONFINEMENT
RADIATION TRANSPORT
THERMONUCLEAR DEVICES