Influence of Surface Waves on Kármán Street Behind Vertical Cylinder: Subharmonic Lock-in and Phase Synchronizaton

Hans Gunnoo (1) , Nizar Abcha (1) , Isabel García-Hermosa (1) , Anne-Claire Bennis (1) , Alexander B. Ezersky (1)

1 M2C - Morphodynamique Continentale et Côtière

It is demonstrated experimentally that the influence of harmonic surface waves on the turbulent Kármán vortex street leads to lock-in of the shedding frequency and phase synchronization. These effects occur if the frequency of the surface wave is approximately two times higher than the frequency of vortex shedding. A region of frequency lock-in is found on the plane “amplitude—frequency” of the surface waves.

Domaines: Océanographie

Hans Gunnoo, Nizar Abcha, Isabel García-Hermosa, Anne-Claire Bennis, Alexander B. Ezersky. Influence of Surface Waves on Kármán Street Behind Vertical Cylinder: Subharmonic Lock-in and Phase Synchronizaton. Segalini, A. Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015), 185, pp.1-9, 2016, Springer Proceedings in Physics, 978-3-319-30600-1. ⟨10.1007/978-3-319-30602-5_19⟩. ⟨hal-01555805⟩