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Subcritical equilibria in Taylor-Couette flow
Deguchi, Kengo; Meseguer Serrano, Álvaro; Mellibovsky Elstein, Fernando
Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. Escola d'Enginyeria de Telecomunicació i Aeroespacial de Castelldefels (EETAC); Universitat Politècnica de Catalunya. DF - Dinàmica No Lineal de Fluids
Nonlinear equilibrium states characterized by strongly localized vortex pairs are calculated in the linearly stable parameter region of counterrotating Taylor-Couette flow. These subcritical states are rotating waves whose region of existence is consistent with the critical threshold for relaminarization observed in experiments. For sufficiently rapid outer cylinder rotation the solutions extend beyond the static inner cylinder case to corotation, thus exceeding, for the first time, the boundary defined by the inviscid Rayleigh's stability criterion.
Àrees temàtiques de la UPC::Física
Pipe--Fluid dynamics
Turbulence
Taylor vortices
Localized vortex disturbance
External shear flows
Traveling-waves
Pipe-flow
Turbulence
Transition
Evolution
Canonades--Dinàmica de fluids
Turbulències
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
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