Reliability of initial-value MHD calculations of tokamak disruptions

Technical Report · Fri Jun 01 00:00:00 EDT 1984

DOI:https://doi.org/10.2172/6774894· OSTI ID:6774894

Hicks, H. R.; Carreras, B. A.; Garcia, L.; Holmes, J. A.

We have proposed the nonlinear coupling of resistive tearing modes as the mechanism for some tokamak disruptions. This is based primarily on initial-value resistive magnetohydrodynamic calculations performed with a finite-difference grid in minor radius and Fourier series expansion in the poloidal and toroidal angles. The calculations show that, for certain q profiles, the nonlinear interaction of tearing modes of different helicities leads to the rapid destabilization of other modes. The resulting effects and the time scale are consistent with the tokamak disruption.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6774894
• Report Number(s): ORNL/TM-9127; ON: DE84013600
• Resource Relation: Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA DISRUPTION
TEARING INSTABILITY
TOKAMAK DEVICES
FOURIER ANALYSIS
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
CLOSED PLASMA DEVICES
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
MECHANICS
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR DEVICES
700107* - Fusion Energy- Plasma Research- Instabilities