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Zhurnal Tekhnicheskoi Fiziki, 2023 Volume 93, Issue 11, Pages 1539–1549 (Mi jtf7120)

Gases and Fluids

High-resolution visualization of the gravitational separation of a water drop under an electrostatic field

Yu. D. Chashechkin, V. E. Prokhorov

Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences, Moscow, Russia

Abstract: A high-resolution video recording of gravitational pinch-off of the freely falling drop additionally affected with an external electrostatic field is carried out. The evolution of the shape and dynamics of motion of the structural components both the droplet itself and the satellite, as well as the secondary satellite in the absence of an electric field, is traced. Estimates of the total energy components, dominate scales and dimensionless parameters of the flow under study are given.

Keywords: drop, gravity, electrostatic field, shape evolution, high-voltage source, high-speed video filming.

Received: 19.06.2023
Revised: 19.09.2023
Accepted: 21.09.2023

DOI: 10.61011/JTF.2023.11.56485.151-23



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© Steklov Math. Inst. of RAS, 2025