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.
|Журнал||Journal of Physics: Conference Series|
|Состояние||Опубликовано - 19 апр 2021|
|Событие||16th All-Russian School-Conference of Young Scientists with International Participation on Actual Problems of Thermal Physics and Physical Hydrodynamics, APTPH XVI 2020 - Novosibirsk, Российская Федерация|
Продолжительность: 24 ноя 2020 → 27 ноя 2020
Предметные области OECD FOS+WOS
- 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ