Spatiotemporal pattern modulations in the Taylor-Dean system.
Spatiotemporal pattern modulations in the Taylor-Dean system.
复制标题
泰勒-迪恩系统中的时空模式调制。
DOI：
10.1103/physrevlett.64.1729
复制
发表时间：
1990
影响因子：
8.6
通讯作者：
Wesfreid
中科院分区：
文献类型：
--
作者：
Mutabazi;Hegseth;Andereck;Wesfreid
本文研究了当初始失稳形成一种在空间和时间上具有简单周期性的斜辊移动模式时，两个水平同轴圆柱间的部分填充间隙的流动。在开始的稍上方，有第二个不稳定性，导致轴向波长为~ 3卷和频率较低的卷的周期性调制。移动倾斜卷和~ 3卷调制模式都表现出长波长、低频相位调制和相关缺陷
Flow between two horizontal coaxial cylinders with a partially filled gap is investigated for the case when the primary instability forms a pattern of traveling inclined rolls which is simply periodic in space and time. Slightly above the onset, there is a second instability which results in a periodic modulation of the rolls with an axial wavelength of ∼3 rolls and a lower frequency. Both the traveling inclined rolls and the ∼3-roll-modulation pattern exhibit long-wavelength, low-frequency phase modulations and associated defects