Reliability of initial-value MHD calculations of tokamak disruptions

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

doi:10.2172/6774894

Title: Reliability of initial-value MHD calculations of tokamak disruptions

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Abstract

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.

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

Publication Date:: Fri Jun 01 00:00:00 EDT 1984

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

OSTI Identifier:: 6774894

Report Number(s):: ORNL/TM-9127
ON: DE84013600

DOE Contract Number:: AC05-84OR21400

Resource Type:: Technical Report

Resource Relation:: Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted

Country of Publication:: United States

Language:: English

Subject:: 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

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                    Hicks, H. R., Carreras, B. A., Garcia, L., and Holmes, J. A. Reliability of initial-value MHD calculations of tokamak disruptions.  United States: N. p., 1984. 
        Web.  doi:10.2172/6774894.

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                    Hicks, H. R., Carreras, B. A., Garcia, L., & Holmes, J. A. Reliability of initial-value MHD calculations of tokamak disruptions.  United States.  https://doi.org/10.2172/6774894

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                    Hicks, H. R., Carreras, B. A., Garcia, L., and Holmes, J. A. 1984.  
        "Reliability of initial-value MHD calculations of tokamak disruptions".  United States.  https://doi.org/10.2172/6774894.  https://www.osti.gov/servlets/purl/6774894.

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@article{osti_6774894,

  title        = {Reliability of initial-value MHD calculations of tokamak disruptions},

  author       = {Hicks, H. R. and Carreras, B. A. and Garcia, L. and Holmes, J. A.},

  abstractNote = {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.},

  doi          = {10.2172/6774894},

  url          = {https://www.osti.gov/biblio/6774894},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Jun 01 00:00:00 EDT 1984},

  month        = {Fri Jun 01 00:00:00 EDT 1984}

}

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