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 Seminars for the Institute for Energy and Environmental Flows (formerly BP Institute) series.

This talk is included in these lists:

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

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