Stability of two-dimensional vorticity filaments

被引：7
作者：
Elhmaidi, D [1 ]
Provenzale, A
Lili, T
Babiano, A
机构：
[1] Univ Tunis, Fac Sci, Tunis, Tunisia
[2] CNR, Ist Sci Atmosfera & Clima, I-10126 Turin, Italy
[3] Univ Genoa, CIMA, Savona, Italy
[4] ENS, CNRS, Meteorol Dynam Lab, F-75230 Paris 05, France
来源：
PHYSICS LETTERS A | 2004年 / 333卷 / 1-2期
关键词：
vorticity filament; stability;
D O I：
10.1016/j.physleta.2004.10.033
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We discuss the results of a numerical study on the stability of two-dimensional vorticity filaments around a circular vortex. We illustrate how the stability of the filaments depends on the balance between the strain associated with the far field of the vortex and the local vorticity of the filament, and we discuss an empirical criterion for filament stability. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：85 / 90
页数：6
相关论文
共 14 条
[1]   Revisiting freely decaying two-dimensional turbulence at millennial resolution [J].
Bracco, A ;
McWilliams, JC ;
Murante, G ;
Provenzale, A ;
Weiss, JB .
PHYSICS OF FLUIDS, 2000, 12 (11) :2931-2941
[2]   Dispersion and mixing in quasigeostrophic turbulence [J].
Bracco, A ;
von Hardenberg, J ;
Provenzale, A ;
Weiss, JB ;
McWilliams, JC .
PHYSICAL REVIEW LETTERS, 2004, 92 (08)
[3]   The velocity distribution of barotropic turbulence [J].
Bracco, A ;
LaCasce, J ;
Pasquero, C ;
Provenzale, A .
PHYSICS OF FLUIDS, 2000, 12 (10) :2478-2488
[4]   ON THE STABILIZATION OF A TWO-DIMENSIONAL VORTEX STRIP BY ADVERSE SHEAR [J].
DRITSCHEL, DG .
JOURNAL OF FLUID MECHANICS, 1989, 206 :193-221
[5]   THE STABILITY OF A 2-DIMENSIONAL VORTICITY FILAMENT UNDER UNIFORM STRAIN [J].
DRITSCHEL, DG ;
HAYNES, PH ;
JUCKES, MN ;
SHEPHERD, TG .
JOURNAL OF FLUID MECHANICS, 1991, 230 :647-665
[6]   ELEMENTARY TOPOLOGY OF 2-DIMENSIONAL TURBULENCE FROM A LAGRANGIAN VIEWPOINT AND SINGLE-PARTICLE DISPERSION [J].
ELHMAIDI, D ;
PROVENZALE, A ;
BABIANO, A .
JOURNAL OF FLUID MECHANICS, 1993, 257 :533-558
[7]   Vorticity filaments in two-dimensional turbulence: creation, stability and effect [J].
Kevlahan, NKR ;
Farge, M .
JOURNAL OF FLUID MECHANICS, 1997, 346 :49-76
[8]   THE EMERGENCE OF ISOLATED COHERENT VORTICES IN TURBULENT-FLOW [J].
MCWILLIAMS, JC .
JOURNAL OF FLUID MECHANICS, 1984, 146 (SEP) :21-43
[9]   HORIZONTAL DISPERSION OF FLOATABLE PARTICLES IN VICINITY OF VELOCITY SINGULARITIES SUCH AS CONVERGENCES [J].
OKUBO, A .
DEEP-SEA RESEARCH, 1970, 17 (03) :445-&
[10]   Parameterization of dispersion in two-dimensional turbulence [J].
Pasquero, C ;
Provenzale, A ;
Babiano, A .
JOURNAL OF FLUID MECHANICS, 2001, 439 :279-303
12