SELECTIVE DECAY AND COHERENT VORTICES IN 2-DIMENSIONAL INCOMPRESSIBLE TURBULENCE

被引：112

作者：

MATTHAEUS, WH ^{[1
]}

STRIBLING, WT ^{[1
]}

MARTINEZ, D ^{[1
]}

OUGHTON, S ^{[1
]}

MONTGOMERY, D ^{[1
]}

机构：

[1] DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH 03755

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.66.2731

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Numerical solution of two-dimensional incompressible hydrodynamics shows that states of near minimal ratio of enstrophy to energy can be attained in times short compared with the flow decay time, confirming the simplest turbulent selective decay conjecture, and suggesting that coherent vortex structures do not terminate nonlinear processes. After all possible vortex mergers occur, the vorticity attains a particlelike character, suggested by the late-time similarity of the streamlines to Ewald potential contours.

引用

页码：2731 / 2734

页数：4

共 25 条

[1]

Batchelor G. K., 1969, PHYS FLUIDS, V12, pII, DOI DOI 10.1063/1.1692443

[2] THE DYNAMICS OF FREELY DECAYING TWO-DIMENSIONAL TURBULENCE [J].