Open AccessOscillatory dynamics of two liquids interface in straight narrow gap
Author(s) -
Olga Vlasova,
В. Г. Козлов
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1809/1/012028
Subject(s) - inviscid flow , viscosity , viscous liquid , mechanics , dynamics (music) , interface (matter) , perpendicular , amplitude , motion (physics) , physics , channel (broadcasting) , liquid liquid , classical mechanics , optics , thermodynamics , chemistry , geometry , mathematics , acoustics , computer science , bubble , maximum bubble pressure method , computer network , chromatography
Oscillatory dynamics of the liquid-liquid interface in a straight slot channel is studied experimentally. We use fluids with a large difference in viscosity and similar densities. The experimental conditions are chosen in such a way that the oscillating motion of a low-viscosity liquid is inviscid, and the oscillating motion of viscous liquid obeys Darcy’s law. At the beginning of the experiment, the interface is oriented perpendicular to the channel axis. It is found that the interface takes a shape of a symmetric hill curved towards a viscous liquid under liquid oscillations. The equilibrium interface shape (the hill height) is determined by the amplitude of the interface oscillations.