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Nonlinear evolution of resistive tearing mode instability with shear flow and viscosityThe effect of shear flow on the nonlinear evolution of the tearing mode is investigated via numerical solutions of the resistive MHD equations in slab geometry, using a finite-difference alternative-direction implicit method. It was found that, when the shear flow is small (V less than 0.3), the tearing mode saturates within one resistive time, whereas for larger flows the nonlinear saturation develops on longer time scales. The magnetic energy release decreases and the saturation time increases with increasing values of V for both small and large resistivity. Shear flow was found to decrease the saturated magnetic island width and to generate currents far from the tearing layer. Results suggest that equilibrium shear flow may improve the confinement of tokamak plasma.
Document ID
19930042916
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ofman, L.
(NASA Goddard Space Flight Center Greenbelt, MD; Texas Univ., Austin, United States)
Morrison, P. J.
(Texas Univ. Austin, United States)
Steinolfson, R. S.
(Southwest Research Inst. San Antonio, TX, United States)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: Physics of Fluids B
Volume: 5
Issue: 2
ISSN: 0899-8221
Subject Category
Plasma Physics
Accession Number
93A26913
Funding Number(s)
CONTRACT_GRANT: DE-FG05-80ET-53088
CONTRACT_GRANT: NSF ATM-90-15705
Distribution Limits
Public
Copyright
Other

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