Three-dimensional Rayleigh-Taylor instability of spherical systems

Journal Article · Mon Jul 23 04:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.432· OSTI ID:6598138

Sakagami, H ^[1]; Nishihara, K ^[2]

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1. Institute for Supercomputing Research, Recruit Company Ltd., 1-13-1 Kachidoki Chuo-ku, Tokyo 104 (Japan)
2. Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka Suita, Osaka 565 (Japan)

A fully three-dimensional Rayleigh-Taylor instability of the pusher-fuel contact surface in a spherically stagnating system is investigated with the use of a new three-dimensional fluid code IMPACT-3D. Linear growth rates in the simulations agree quite well with analytical values which include spherical-geometry effects. Saturation amplitudes of the exponential growth and free-fall speed following the saturation are found to be, respectively, larger and faster than those of 2D simulations. Nonlinear bubble-spike structures are also studied in detail.

• OSTI ID: 6598138
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 65:4; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
AMPLITUDES
BUBBLES
CONFIGURATION
INSTABILITY
INSTABILITY GROWTH RATES
NONLINEAR PROBLEMS
PLASMA
RAYLEIGH-TAYLOR INSTABILITY
SATURATION
SIMULATION
SPHERICAL CONFIGURATION
STAGNATION
THREE-DIMENSIONAL CALCULATIONS