Influence of flow shear on localized Rayleigh–Taylor and resistive drift wave instabilities

The impact of velocity shear on the localized solutions of Rayleigh–Taylor (RT) and resistive drift wave (DW) instabilities has been investigated. Slab geometry is used, and the plasma density gradient is assumed to have a finite spatial structure. It demonstrates that the velocity shear has quite d...

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Bibliographic Details
Published in:Contributions to plasma physics (1988) 2020-06, Vol.60 (5-6), p.n/a
Main Authors: Zhang, Yanzeng, Krasheninnikov, Sergei I., Smolyakov, Andrei I.
Format: Article
Language:English
Subjects:
Drift
Eddies
Fluid flow
localized solution
Plasma density
Rayleigh–Taylor instability
resistive drift wave instability
Shear
Velocity
velocity shear
Vortices
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Summary:The impact of velocity shear on the localized solutions of Rayleigh–Taylor (RT) and resistive drift wave (DW) instabilities has been investigated. Slab geometry is used, and the plasma density gradient is assumed to have a finite spatial structure. It demonstrates that the velocity shear has quite different effects on these instabilities: while it stabilizes RT instability and causes tilting of the eddies of equipotential contour, it has a very mild impact on the resistive DW instability and simply shifts the eddies with no tilting.
ISSN:0863-1042
1521-3986
DOI:10.1002/ctpp.201900098