Shear flow stabilization of the hydromagnetic Rayleigh-Taylor instability

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:323581

Roderick, N F ^[1]; Shumlak, U ^[2]; Douglas, M ^[3]; Peterkin, Jr, R E; Ruden, E ^[4]

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1. Univ. of New Mexico, Albuquerque, NM (United States)
2. Univ. of Washington, Seattle, WA (United States)
3. Sandia National Labs., Albuquerque, NM (United States)
4. Phillips Lab., Kirtland AFB, NM (United States)

Numerical simulations have indicated that shear flow may help stabilize the hydromagnetic Rayleigh-Taylor instability in imploding plasma z-pinches. A simple extension to a model presented in Chandrasekhar has been developed to study the linear stability of incompressible plasma subjected to both a shear flow and acceleration. The model has been used to investigate the stability plasma implosion schemes using externally imposed velocity shear which develops from the plasma flow itself. Specific parameters were chosen to represent plasma implosions driven by the Saturn and PBFA-Z, pulsed power generators at Sandia National Laboratories. Results indicate a high shear is necessary to stabilize the z-pinch implosions studied.

• OSTI ID: 323581
• Report Number(s): CONF-970559--
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
IMPLOSIONS
INCOMPRESSIBLE FLOW
LONGITUDINAL PINCH
MATHEMATICAL MODELS
RAYLEIGH-TAYLOR INSTABILITY
SHEAR
STABILIZATION