Large-scale finite-wavelength modulation within turbulent shear flows -: art. no. 014501

被引：172
|
作者：
Prigent, A [1 ]
Grégoire, G
Chaté, H
Dauchot, O
van Saarloos, W
机构：
[1] CEA Saclay, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
[2] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands
来源：
PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 01期
关键词：
D O I：
10.1103/PhysRevLett.89.014501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show that turbulent "spirals" and "spots" observed in Taylor-Couette and plane Couette flow correspond to a turbulence-intensity modulated finite-wavelength pattern which in every respect fits the phenomenology of coupled noisy Ginzburg-Landau (amplitude) equations with noise. This suggests the existence of a long-wavelength instability of the homogeneous turbulence regime.
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页码：145011 / 145014
页数：4
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