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Wave-induced collisions of thin floating disks

Yiew, LJ; Bennetts, LG; Meylan, MH; Thomas, GA; French, BJ; (2017) Wave-induced collisions of thin floating disks. Physics of Fluids , 29 (12) , Article 127102. 10.1063/1.5003310. Green open access

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Collisions between two thin floating disks forced by regular water waves are studied for a range of wave amplitudes and lengths, using laboratory wave basin experiments and a mathematical model. Three collision regimes are identified from the experiments in terms of collision frequency and strength, and the collisions are shown to be caused by drift for short incident wavelengths and relative surge motion between the disks for longer incident waves. The model is based on slope-sliding theory for the wave-induced disk motions and rigid-body collisions. It is shown to predict collision frequencies and velocities accurately for intermediate–long incident wavelengths. Incorporating drift and wave scattering forces into the model is shown to capture the collision behaviours for short incident wavelengths.

Type: Article
Title: Wave-induced collisions of thin floating disks
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.5003310
Publisher version: https://doi.org/10.1063/1.5003310
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Cryosphere, General physics, Hydrology, Geophysics, Hydrospheric geophysics, Rigid body dynamics, Wave mechanics, Wave propagation, Rheology and fluid dynamics, Classical mechanics
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10038384
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