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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Wave-induced collisions of thin floating disks -
Luke Bennetts (University of Adelaide)
DTSTART;TZID=Europe/London:20170919T150000
DTEND;TZID=Europe/London:20170919T163000
UID:TALK80171AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/80171
DESCRIPTION:Collisions between two thin floating disks forced
by regular water waves are studied for a range of
wave amplitudes and lengths\, using laboratory wav
e basin experiments and a mathematical model. Thre
e collision regimes are identified from the experi
ments in terms of collision frequency and strength
\, and the collisions are shown to be caused by dr
ift for short incident wavelengths and relative su
rge motion between the disks for longer incident w
aves. The model is based on slope-sliding theory f
or the wave-induced disk motions\, and rigid-body
collisions. It is shown to predict collision frequ
encies and velocities accurately for long incident
wavelengths. Incorporating drift and wave scatter
ing forces into the model is shown to capture the
collision behaviours for short incident wavelength
s.
LOCATION:Seminar Room 2\, Newton Institute
CONTACT:INI IT
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