### Abstract

The stability of flows near two critical points (in parameter space) at which Couette flow looses stability simultaneously to two non-axisymmetric wavenumbers has been studied experimentally. The findings are compared with the theoretical predictions of [Chossat et al., 1987], hereafter cited as CDI. In the case of the first critical point, resulting from the interaction of azimuthal wavenumbers m = 1 and m = 2, some quantitative disagreements with predictions were observed. The second point, resulting from the interaction between m = 2 and m = 3, was found at a slightly different location than that predicted by the theory. A transition to a seemingly chaotic regime was observed in addition to the transitions predicted by CDI. Experiments also show a nonperiodic amplitude variation of the velocity signal and a first transition to a doubly-periodic flow.

Original language | English |
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Pages (from-to) | 93-106 |

Number of pages | 14 |

Journal | European Journal of Mechanics, B/Fluids |

Volume | 9 |

Issue number | 1 |

State | Published - 1990 |

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## Cite this

*European Journal of Mechanics, B/Fluids*,

*9*(1), 93-106.