Subcritical equilibria in Taylor-Couette flow

Kengo Deguchi, Alvaro Meseguer, Fernando Mellibovsky

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Abstract

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.
Original languageEnglish
Article number184502
Number of pages5
JournalPhysical Review Letters
Volume112
Issue number18
DOIs
Publication statusPublished - 8 May 2014
Externally publishedYes

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