Parametric interaction of gravity-capillary wave triads under radiation pressure of ultrasound

Krutyansky, L. M.; Preobrazhensky, Vladimir; Brysev, A. P.; Pernod, Philippe

doi:10.1016/j.ultras.2019.105972

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…UA is one of the considered options. As mentioned in [16], [17] and [18], ultrasonic acoustic emissions may generate short waves at the free-surface. To study this alternative, three underwater ultrasonic transducers have been tested (the characteristics of each transducers are described in Tab.2).…”

Section: Generation Of Texture Using Underwater Acoustics (Ua)mentioning

confidence: 97%

Towards accurate stereo-video based free-surface reconstruction for wave tank experiments

Page

Tassin

Caverne

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Measuring accurately the shape of the free surface in medium-scale hydrodynamic testing facilities is challenging with conventional wave gauges. To overcome this problem, it is necessary to go towards higher resolution measurement systems. For this purpose, we investigate the ability of stereo-video acquisition systems to reconstruct free surface waves in laboratory conditions. This technique has been proven to give satisfactory results in open sea conditions, although it is dependent on the environmental conditions (weather, solar incidence angle). At sea, the stereo-video reconstruction algorithm makes profit of the short waves generated by the wind in order to correlate the points from the left and right images. The main challenge of adapting this technique to laboratory conditions, i.e. in absence of sun and wind, is to overcome the absence of texture on the free surface. This paper presents recent work aiming at developing a stereo-vision measurement system for laboratory conditions. Our efforts have been devoted to finding an adapted lighting system and generating a texture suitable for the reconstruction algorithm. Different lighting configurations have been tested in order to understand its impact on the reconstructions. For the texture generation, we have investigated different means of generating short surface waves (water droplets, air blowing, circulation current, underwater acoustic emissions) in different experimental facilities. Our conclusions show that it is possible to reconstruct the shape of surface gravity waves in the presence of short surface waves and that the effects of lighting and texture on the quality of the reconstruction are strongly coupled.

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Section: Generation Of Texture Using Underwater Acoustics (Ua)mentioning

confidence: 97%

Towards accurate stereo-video based free-surface reconstruction for wave tank experiments

Page

Tassin

Caverne

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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show abstract

“…Conditions for the development of an explosive instability were considered, 17 and amplitudes of the three-wave interactions were measured. 18 A new type of instability of GCW similar to an inverse energy cascade was discovered in conditions of permanent ultrasonic impact on the liquid surface. 19 Excitation of a low-frequency GCW by high-frequency ultrasound was considered theoretically in a model of a nondissipative medium.…”

Section: Introductionmentioning

confidence: 99%

Parametric excitation of a gravity–capillary wave by radiation pressure of ultrasound

et al. 2022

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Parametric instability of a standing gravity-capillary wave is observed in conditions of irradiation of a surface of a liquid by a plane ultrasound beam modulated by amplitude. A threshold value of ultrasound intensity for excitation of the parametric oscillations of the surface is determined, and the frequency response of the process is measured. A mechanism of instability based on sound radiation pressure applied to a liquid surface curved with menisci is suggested.

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The Korteweg–De Vries Equation with Forcing Involving Products of Eigenfunctions

Fokas¹,

A.²

2023

Z. mat. fiz. anal. geom.

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Parametric interaction of gravity-capillary wave triads under radiation pressure of ultrasound

Cited by 3 publications

References 18 publications

Towards accurate stereo-video based free-surface reconstruction for wave tank experiments

Towards accurate stereo-video based free-surface reconstruction for wave tank experiments

Parametric excitation of a gravity–capillary wave by radiation pressure of ultrasound

The Korteweg–De Vries Equation with Forcing Involving Products of Eigenfunctions

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