Routes to turbulence in Taylor–Couette flow
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| Autori principali: | , , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2023
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| _version_ | 1867171883238031360 |
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| author | Feldmann, Daniel Borrero-Echeverry, Daniel Burin, Michael J Avila, Kerstin Avila, Marc |
| author_facet | Feldmann, Daniel Borrero-Echeverry, Daniel Burin, Michael J Avila, Kerstin Avila, Marc |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Fluid flows between rotating concentric cylinders exhibit two distinct routes to turbulence. In flows dominated by inner-cylinder rotation, a sequence of linear instabilities leads to temporally chaotic dynamics as the rotation speed is increased. The resulting flow patterns occupy the whole system and sequentially lose spatial symmetry and coherence in the transition process. In flows dominated by outercylinder rotation, the transition is abrupt and leads directly to turbulent flow regions that compete with laminar ones. We here review the main features of these two routes to turbulence. Bifurcation theory rationalises the origin of temporal chaos in both cases. However, the catastrophic transition of flows dominated by outer-cylinder rotation can only be understood by accounting for the spatial proliferation of turbulent regions with a statistical approach. We stress the role of the rotation number (the ratio of Coriolis to inertial forces) and show that it determines the lower border for the existence of intermittent laminar-turbulent patterns. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_955328 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Routes to turbulence in Taylor–Couette flow Feldmann, Daniel Borrero-Echeverry, Daniel Burin, Michael J Avila, Kerstin Avila, Marc Binary Object; Binary Object (File Size); Description; dynamical systems; Figure; File format; File name; pattern formation; Title; transition to turbulence; Variable Fluid flows between rotating concentric cylinders exhibit two distinct routes to turbulence. In flows dominated by inner-cylinder rotation, a sequence of linear instabilities leads to temporally chaotic dynamics as the rotation speed is increased. The resulting flow patterns occupy the whole system and sequentially lose spatial symmetry and coherence in the transition process. In flows dominated by outercylinder rotation, the transition is abrupt and leads directly to turbulent flow regions that compete with laminar ones. We here review the main features of these two routes to turbulence. Bifurcation theory rationalises the origin of temporal chaos in both cases. However, the catastrophic transition of flows dominated by outer-cylinder rotation can only be understood by accounting for the spatial proliferation of turbulent regions with a statistical approach. We stress the role of the rotation number (the ratio of Coriolis to inertial forces) and show that it determines the lower border for the existence of intermittent laminar-turbulent patterns. |
| title | Routes to turbulence in Taylor–Couette flow |
| topic | Binary Object; Binary Object (File Size); Description; dynamical systems; Figure; File format; File name; pattern formation; Title; transition to turbulence; Variable |
| url | https://doi.org/10.1594/PANGAEA.955328 |