Skipping Stones, Ruined Roads and those Dam Oscillations

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• Neil Balmforth, University of British Columbia
• Thursday 13 March 2014, 11:30-12:30
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ.

If you have a question about this talk, please contact Catherine Pearson.

In this talk I will describe recent results on the modelling of how the collision of an object with a moving, deformable surface can generate an apparent ``super-elastic’’ bounce. The phenomenon allows towed paddles to skip continually at high speed over water (demanding an extension of models of skipping stones) and to ``washboard’’ layers of sand or mud with only a single passage over that substrate (in contrast to the conventional explanation for washboard roads). Along the way, I will mention a related instability involving the sloshing of a fluid reservoir coupled to oscillations of a movable dam, a hydrodynamic analogue of musical instruments like the clarinet.

This talk is part of the Institute for Energy and Environmental Flows (IEEF) series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Cambridge Energy Seminars
• Department of Earth Sciences seminars
• Institute for Energy and Environmental Flows (IEEF)
• NanoDTC Energy Materials Talks
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ
• history
• ps635

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