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Observation of star-shaped surface gravity waves

Abstract : We report a new type of standing gravity waves of large amplitude, having alternatively the shape of a star and of a polygon. This wave is observed by means of a laboratory experiment by vibrating vertically a tank. The symmetry of the star (i.e. the number of branches) is independent of the container form and size, and can be changed according to the amplitude and frequency of the vibration. We show that this wave geometry results from nonlinear resonant couplings between three waves, although this possibility was denied for pure gravity waves up to now.
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Contributor : Jean Rajchenbach <>
Submitted on : Friday, September 6, 2013 - 12:17:38 PM
Last modification on : Tuesday, May 26, 2020 - 6:50:51 PM


  • HAL Id : hal-00858982, version 1



Jean Rajchenbach, Didier Clamond, A. Leroux. Observation of star-shaped surface gravity waves. 65th Annual Meeting of the American Physical Society. Division of Fluid Dynamics., American Physical Society, Nov 2012, Long Beach, California, United States. ⟨hal-00858982⟩



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