Acoustics of Periodic and Multiple Drop Impacts on a Water Surface

High-speed video filming of surface currents and synchronized acoustic measurements of the underwater sound signals of falling drops were performed in a laboratory tank. During successive falling, the main structural elements of collision of a single drop with the surface are preserved in distorted...

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Veröffentlicht in:Acoustical physics 2023-06, Vol.69 (3), p.348-356
Hauptverfasser: Chashechkin, Yu. D., Prokhorov, V. E.
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description High-speed video filming of surface currents and synchronized acoustic measurements of the underwater sound signals of falling drops were performed in a laboratory tank. During successive falling, the main structural elements of collision of a single drop with the surface are preserved in distorted form in the flow pattern: cavity, splashes, crown, and splash; shock pulses accompanying each contact are stably repeated in the phonogram. In addition, rare resonance packets are observed. For multiple falling drops, the flow pattern changes dramatically: the main structural elements of the drop impact flow disappear, and the surface is covered with floating bubbles. The phonogram assumes the form of a noise signal, in the spectrum of which separate linear sections stand out.
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subjects Acoustic measurement
Acoustics
Flow distribution
Motion pictures
Physical Acoustics
Physics
Physics and Astronomy
Production and direction
Shock pulses
Structural members
Underwater acoustics
title Acoustics of Periodic and Multiple Drop Impacts on a Water Surface
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