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- Title
Sound generation as a drop falls on a water surface.
- Authors
Prokhorov, V.; Chashechkin, Yu.
- Abstract
Impact of a drop on a water surface is accompanied by a series of sound pulses propagating in air and underwater. Depending on the falling mode (drop size and initial velocity), pulses substantially differ in amplitude, duration, and modulation frequency. We study falling modes in which in addition to conventional sound packets-the shock pulse and single resonance sound packets-several packets are observed. Experiments were conducted with simultaneous recording of sound in air and underwater and were accompanied by synchronous video depiction of currents in the drop impact region. Comparison of videograms and phonograms demonstrate that the sources of sound packets are gas cavities of arbitrary shape detached from the underwater cavern under the action of large accelerations (several km/s) during a sharp change in its surface area, which gradually achieve equilibrial elliptical and spherical shapes.
- Subjects
SOUND measurement; RESONANCE; WATER; AUDIO equipment; SURFACE area; UNDERWATER acoustics; EXPERIMENTS
- Publication
Acoustical Physics, 2011, Vol 57, Issue 6, p807
- ISSN
1063-7710
- Publication type
Article
- DOI
10.1134/S1063771011050137