Three-dimensional Rayleigh-Taylor instability of spherical systems.
Three-dimensional Rayleigh-Taylor instability of spherical systems.
复制标题
球形系统的三维瑞利-泰勒不稳定性。
DOI：
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发表时间：
1990
影响因子：
8.6
通讯作者：
Nishihara
中科院分区：
文献类型：
--
作者：
Sakagami;Nishihara
利用新的三维流体程序impact - 3d研究了球形滞止系统中推进器-燃料接触面的全三维Rayleigh-Taylor不稳定性。模拟中的线性增长率与分析值吻合得很好，其中包括球形几何效应。指数增长和自由落体速度的饱和振幅被发现是，分别比那些2D模拟更大和更快。对非线性气泡-尖峰结构也进行了详细的研究。
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.