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Emission of the sequence of sound packets during a drop falling onto the surface of water

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Abstract

Emission of sound signals accompanying the fall of a water drop onto a free liquid surface is investigated in a laboratory bath by high-speed video filming and underwater acoustics. Emission of high-frequency sound is detected during the initial contact of the drop with the surface. Low-frequency sound packets are observed after a prolonged silence interval with the formation of nonequilibrium-shaped gas cavities with sharpenings during their reconstruction into spherical bubbles. By virtue of complexity of the flow pattern at the stages of detachment and coalescence of gas cavities, the frequency and intensity of the emitted sound varied in wide ranges even under invariable initial experimental conditions.

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Authors and Affiliations

  1. Institute for Problems of Mechanics, Russian Academy of Sciences, pr. Vernadskogo 101, Moscow, 119526, Russia

    V. E. Prokhorov & Yu. D. Chashechkin

Authors
  1. V. E. Prokhorov
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  2. Yu. D. Chashechkin
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Correspondence to V. E. Prokhorov.

Additional information

Original Russian Text © V.E. Prokhorov, Yu.D. Chashechkin, 2012, published in Doklady Akademii Nauk, 2012, Vol. 443, No. 1, pp. 48–52.

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Prokhorov, V.E., Chashechkin, Y.D. Emission of the sequence of sound packets during a drop falling onto the surface of water. Dokl. Phys. 57, 114–118 (2012). https://doi.org/10.1134/S1028335812010089

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  • DOI: https://doi.org/10.1134/S1028335812010089

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