New method for computing ideal MHD normal modes in axisymmetric toroidal geometry

Technical Report · Thu Nov 01 00:00:00 EST 1984

DOI:https://doi.org/10.2172/6339386· OSTI ID:6339386

Wysocki, F; Grimm, R C

Analytic elimination of the two magnetic surface components of the displacement vector permits the normal mode ideal MHD equations to be reduced to a scalar form. A Galerkin procedure, similar to that used in the PEST codes, is implemented to determine the normal modes computationally. The method retains the efficient stability capabilities of the PEST 2 energy principle code, while allowing computation of the normal mode frequencies and eigenfunctions, if desired. The procedure is illustrated by comparison with earlier various of PEST and by application to tilting modes in spheromaks, and to stable discrete Alfven waves in tokamak geometry.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 6339386
• Report Number(s): PPPL-2162; ON: DE85004402
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA MACROINSTABILITIES
NUMERICAL SOLUTION
SPHEROMAK DEVICES
TILTING INSTABILITY
ALFVEN WAVES
EIGENVALUES
MAGNETIC SURFACES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
ANNULAR SPACE
CLOSED PLASMA DEVICES
CONFIGURATION
HYDROMAGNETIC WAVES
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
PLASMA INSTABILITY
SPACE
THERMONUCLEAR DEVICES
700107* - Fusion Energy- Plasma Research- Instabilities
700202 - Fusion Power Plant Technology- Magnet Coils & Fields