Acoustics of Periodic and Multiple Drop Impacts on a Water Surfaceстатья
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Дата последнего поиска статьи во внешних источниках: 26 января 2024 г.
Аннотация:High-speed video filming of surface currents and synchronized acoustic measurements of theunderwater sound signals of falling drops were performed in a laboratory tank. During successive falling, themain structural elements of collision of a single drop with the surface are preserved in distorted form in theflow pattern: cavity, splashes, crown, and splash; shock pulses accompanying each contact are stably repeatedin the phonogram. In addition, rare resonance packets are observed. For multiple falling drops, the flow patternchanges dramatically: the main structural elements of the drop impact flow disappear, and the surface iscovered with floating bubbles. The phonogram assumes the form of a noise signal, in the spectrum of whichseparate linear sections stand out.