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Beaume, C; Knobloch, E; Chini, GP; Julien, K (2016)
Publisher: IOP Publishing
Languages: English
Types: Article
Subjects:

Classified by OpenAIRE into

arxiv: Physics::Fluid Dynamics
We consider a close relative of plane Couette flow called Waleffe flow in which the fluid is confined between two free-slip walls and the flow driven by a sinusoidal force. We use a reduced model of such flows constructed elsewhere to compute stationary exact coherent structures of Waleffe flow in periodic domains with a large spanwise period. The computations reveal the emergence of stationary states exhibiting strong amplitude and wavelength modulation in the spanwise direction. These modulated states lie on branches exhibiting complex dependence on the Reynolds number but no homoclinic snaking.
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