Open AccessThe features of cavitation flow around a cylinder with a very low aspect ratio
Author(s) -
S G Skripkn,
M. A. Tsoy,
Aleksandra Yu. Kravtsova
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 - 10.1088/1742-6596/1867/1/012032
Subject(s) - cavitation , cylinder , aspect ratio (aeronautics) , materials science , volume (thermodynamics) , mechanics , volume fraction , flow visualization , flow (mathematics) , volumetric flow rate , optics , geometry , composite material , physics , thermodynamics , mathematics
The arising of the cavitation cavity behind the circular cylinder with aspect ratio 0.06 has been investigated using high-speed visualization. High-speed imaging at a sampling rate up to 200 kHz and even higher for the local areas allowed the spatial structure and dynamics of gas-vapor cavities thoroughly to be studied. The time dependence of the volume of the cavitation cavity on time was obtained for all investigated regimes. The vapor volume fraction, as expected, was found to increase with a decrease in cavitation number at higher flowrates. The feature of the separated cavitation cavity behind the cylinder is the complex structure consisting of the set of the flatted bubbles with a thin liquid interface between them. The collapse of the cavitation cavity proved to be always initiated only near one of the channel walls.