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Journal articles
Finite-size effects in parametric subharmonic instability
Abstract : The parametric subharmonic instability in stratified fluids depends on the frequency and the amplitude of the primary plane wave. In this paper, we present experimental and numerical results emphasizing that the finite width of the beam also plays an important role on this triadic instability. A new theoretical approach based on a simple energy balance is developed and compared to numerical and experimental results. Because of the finite width of the primary wave beam, the secondary pair of waves can leave the interaction zone which affects the transfer of energy. Experimental and numerical results are in good agreement with the prediction of this theory, which brings new insights on energy transfers in the ocean where internal waves with finite-width beams are dominant.
Cited literature [20 references]
https://hal-ens-lyon.archives-ouvertes.fr/ensl-01064683
Contributor : Sylvain Joubaud <>
Submitted on : Wednesday, September 17, 2014 - 10:24:09 AM
Last modification on : Thursday, January 23, 2020 - 6:22:07 PM
Document(s) archivé(s) le : Thursday, December 18, 2014 - 10:11:57 AM
Contributor : Sylvain Joubaud <>
Submitted on : Wednesday, September 17, 2014 - 10:24:09 AM
Last modification on : Thursday, January 23, 2020 - 6:22:07 PM
Document(s) archivé(s) le : Thursday, December 18, 2014 - 10:11:57 AM
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