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Article Dans Une Revue Modern Physics Letters A Année : 2016

Frequency lock-in and phase synchronization of vortex shedding behind circular cylinder due to surface waves

Résumé

The influence of harmonic surface wave on non-regular Karman Vortex Street is investigated. In our experiments, Karman Street arises behind a vertical circular cylinder in a water flow and harmonic surface waves propagating upstream. It is found that surface waves can modify regimes of shedding in Karman Street: frequency lock-in and synchronization of vortex shedding can arise. Intensive surface waves can excite symmetric vortex street instead of chess-like street, and completely suppress shedding behind the cylinder. It is shown experimentally that such effects occur if frequency of harmonic surface wave is approximately twice higher than the frequency of vortex shedding. Region of frequency lock-in is found on the plane amplitude–frequency of surface wave.
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Dates et versions

hal-01537629 , version 1 (12-06-2017)

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Citer

Hans Gunnoo, Nizar Abcha, Alexander B. Ezersky. Frequency lock-in and phase synchronization of vortex shedding behind circular cylinder due to surface waves. Modern Physics Letters A, 2016, 380 (7-8), pp.863 - 868. ⟨10.1016/j.physleta.2015.12.029⟩. ⟨hal-01537629⟩
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