Comptes Rendus
no. 12
Note
Oblique and streamwise vortex paths in a plane Couette flow using a RNL system
Frédéric Alizard1
1 LMFA, UMR 5509, Univ Lyon, Université Claude Bernard Lyon 1, École Centrale de Lyon, INSA Lyon, CNRS, 43 Boulevard du 11 Novembre 1918, F-69100, Villeurbanne, France
Comptes Rendus. Mécanique, Volume 348 (2020) no. 12, pp. 959-968.

This paper revisits oblique wave and streamwise vortex scenarios in a plane Couette flow using restricted nonlinear simulations, where only a single Fourier mode for perturbation is retained. It is shown that this restriction of full dynamics gives a good approximation of the two subcritical paths. In particular, critical energy thresholds and edge states compare favorably with results obtained using direct numerical simulations by Duguet et al. (Phys. Rev. E 82 (2010), 026316).

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DOI : 10.5802/crmeca.55
Mots clés : Shear flows, Subcritical transition, Reduced order model, Edge states, Plane Couette flow
Frédéric Alizard 1

1 LMFA, UMR 5509, Univ Lyon, Université Claude Bernard Lyon 1, École Centrale de Lyon, INSA Lyon, CNRS, 43 Boulevard du 11 Novembre 1918, F-69100, Villeurbanne, France
Licence : CC-BY 4.0
Droits d'auteur : Les auteurs conservent leurs droits 
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Frédéric Alizard. Oblique and streamwise vortex paths in a plane Couette flow using a RNL system. Comptes Rendus. Mécanique, Volume 348 (2020) no. 12, pp. 959-968. doi : 10.5802/crmeca.55. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.55/

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