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DOI 10.21662
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Terentiev A.G Jumping drops on the surface of the water. Multiphase Systems. 15 (2020) 3–4. 228–231 (in Russian).
2020. Vol. 15. Issue 3–4, Pp. 228–231
URL: http://mfs.uimech.org/mfs2020.3.135,en
DOI: 10.21662/mfs2020.3.135
Jumping drops on the surface of the water
Terentiev A.G
Chuvash State University named after I.N. Ulyanov, Cheboksary, Russia

Abstract

The paper proposes a theoretical model for the bouncing of a water drop on a free surface. The motion of a drop in air is described by the usual equations connecting the forces of inertia, gravity, and Stokes (viscosity resistance). The drop is considered spherical with a given surface tension. Numerical calculations were carried out using the same algorithm, but with different initial conditions. Some conditions are set for the droplet disintegration, others for the droplet reflection from the free surface. It is shown that the disintegration of a drop occurs periodically with a decrease in the drop size and an increase in the drop rise height. In the interval between droplet decays, periodic reflection from the free surface occurs with a decrease in the rise height.

Keywords

drop,
surface,
surface tension

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