Nonlinear evolution of unstable fluid interface.
Nonlinear evolution of unstable fluid interface.
复制标题
DOI：
10.1103/physreve.66.036301
复制
发表时间：
2000-11
期刊：
影响因子：
--
通讯作者：
S. Abarzhi
中科院分区：
文献类型：
--
作者：
S. Abarzhi
研究了各向同性三维和二维周期流Richtmyer-Meshkov不稳定性中气泡和尖峰的相干运动。对于控制气泡局部动力学的方程，我们找到了由气泡顶端的主曲率参数化的一族正则渐近解。这一族中具有物理意义的解对应于具有扁平表面的气泡，而不是具有有限曲率的气泡。描述了气泡锋面的演化过程，并提出了诊断参数。
We study the coherent motion of bubbles and spikes in the Richtmyer-Meshkov instability for isotropic three-dimensional and two-dimensional periodic flows. For equations governing the local dynamics of the bubble, we find a family of regular asymptotic solutions parametrized by the principal curvature at the bubble top. The physically significant solution in this family corresponds to a bubble with a flattened surface, not to a bubble with a finite curvature. The evolution of the bubble front is described and the diagnostic parameters are suggested.