Resonant formation and control of 2D symmetric vortex waves

被引：24

作者：

Friedland, L ^{[1
]}

Shagalov, AG

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] Inst Phys Met, Ekaterinburg 620219, Russia

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.85.2941

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is shown that m-fold symmetric vortex waves in two dimensions (V states) preserve their functional form in a weak straining flow having appropriate symmetry, but arbitrary time dependence. This phe nomenon is used in driving the V states into a highly nonlinear excitation by subjecting a circular vortex patch to rotation and strain with oscillating strain rate and varying the rotation angular velocity. The effect is due to autoresonance in the system as the excited vortex state boundary self-adjusts its aspect ratio to synchronize with the external flow.

引用

页码：2941 / 2944

页数：4

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