Nonlinear and detuning effects of the nutation angle in precessionally-forced rotating cylinder flow
Visualitza/Obre
10.1103/PhysRevFluids.1.023602
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/101564
Tipus de documentArticle
Data publicació2016-06-16
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The flow in a rapidly rotating cylinder forced to precess through a nutation angle a
is investigated numerically, keeping all parameters constant except a, and tuned to a
triadic resonance at a = 1º. When increasing a, the flow undergoes a sequence of well-
characterized bifurcations associated with triadic resonance, involving heteroclinic and
homoclinic cycles, for a up to about 4º. For larger a, we identify two chaotic regimes.
In the first regime, with a between about 4º and 27º, the bulk flow retains remnants of
the helical structures associated with the triadic resonance, but there are strong nonlinear
interactions between the various azimuthal Fourier components of the flow. For the larger
a regime, large detuning effects lead to the triadic resonance dynamics being completely
swamped by boundary layer eruptions. The azimuthal mean flow at large angles results in a
large mean deviation from solid-body rotation and the flow is characterized by strong shear
at the boundary layers with temporally chaotic eruptions.
CitacióLopez, Juan M., Marques, F. Nonlinear and detuning effects of the nutation angle in precessionally-forced rotating cylinder flow. "PHYSICAL REVIEW FLUIDS", 16 Juny 2016, vol. 1, núm. 2, p. 023602-1-023602-17.
ISSN2469-990X
Versió de l'editorhttp://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.1.023602
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
PRF_LoMa16_angle.pdf | Main Article | 3,250Mb | Visualitza/Obre |