Explosive Instability of Gravity-Capillary Waves under Ultrasound Radiation Pressure


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Abstract

The parametric interaction of ultrasonic and gravity-capillary waves (GCWs) on a liquid surface has been investigated. Harmonic modulation of the intensity of a plane ultrasonic wave incident on the liquid surface from the depth provides nonlinear parametric coupling of GCW wave triads. We determined the resonance conditions, providing spatiotemporal synchronism of interacting waves, and the threshold ultrasound intensities, at which an explosive-type instability develops in the system of standing and traveling GCWs.

About the authors

V. Preobrazhensky

Prokhorov General Physics Institute of the Russian Academy of Sciences, Joint International Laboratory LICS; University of Lille, CNRS, Centrale Lille, UMR 8520

Author for correspondence.
Email: preobr@newmail.ru
Russian Federation, ul. Vavilova 38, Moscow, 119991; Lille, 59000

V. Aleshin

University of Lille, CNRS, Centrale Lille, UMR 8520

Email: preobr@newmail.ru
France, Lille, 59000

P. Pernod

University of Lille, CNRS, Centrale Lille, UMR 8520

Email: preobr@newmail.ru
France, Lille, 59000

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