Fluid Mechanics and Acoustics Laboratory - UMR 5509

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Home > Teams > Turbulence & Instabilities > Publications T&I et posters doctorants > Publications T&I 2020

Article in Comptes Rendus Méc. (2020)

Oblique and streamwise vortex paths in a plane Couette flow using a RNL system

Frédéric Alizard

Oblique and streamwise vortex paths in a plane Couette flow using a RNL system

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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