Spots and turbulent domains in a model of transitional plane Couette flow

被引:25
|
作者
Manneville, P [1 ]
机构
[1] Ecole Polytech, CNRS, UMR 7646, Lab Hydrodynam, F-91128 Palaiseau, France
关键词
Couette flow; transition to turbulence; Galerkin nodeling;
D O I
10.1007/s00162-004-0142-4
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A review of the globally subcritical transition to turbulence in shear flows is presented, with an emphasis on the cases of plane and circular Couette flows (pCf and cCf, respectively). A Swift -Hohenberg-like model is next proposed to interpret the behavior of plane Couette flow in the vicinity of its global stability threshold. We present results of numerical simulations supporting this proposal and helping us to raise "good" questions about the growth and decay of intermittent turbulent domains in this precise context, and more generally about the coexistence of laminar flow and turbulence in other spatio-temporally intermittent flows.
引用
收藏
页码:169 / 181
页数:13
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