A theory of vortex merger

被引：36

作者：

Lansky, IM

ONeil, TM

Schecter, DA

机构：

[1] Physics Department, University of California at San Diego, La Jolla, CA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.79.1479

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This paper discusses a 2D vortex merger for the particular case of a weak point vortex and an extended vortex of nearly circular cross section. A Hamiltonian analysis describes the interaction of the point vortex with surface waves on the extended vortex. Critical layers around the extended vortex are introduced where ''point vortex-surface wave'' resonances occur. Vortex merger occurs only when there is an overlap of neighboring critical layers. In this case the point vortex cascades through a sequence of resonances as it spirals in and merges with the extended vortex.

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页码：1479 / 1482

页数：4

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