Three-dimensional Rayleigh-Taylor instability of spherical systems
- 23 July 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (4) , 432-435
- https://doi.org/10.1103/physrevlett.65.432
Abstract
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 i m p a c t - 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.Keywords
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