Open AccessExperimental study of the local structure of a bubble flow in a flat channel with sudden expansion
Author(s) -
A. V. Chinak,
I. A. Evdokimenko,
D. V. Kulikov,
П. Д. Лобанов
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 - 10.1088/1742-6596/2057/1/012040
Subject(s) - bubble , optics , materials science , channel (broadcasting) , flow (mathematics) , mechanics , plane (geometry) , filter (signal processing) , physics , geometry , mathematics , telecommunications , engineering , electrical engineering
The hydrodynamic structure of the flow in a flat channel with sudden expansion was studied at constant flow rates of liquid and gas in the vertical flow at Re = 6600 and gas content β = 0.03. The measurements were carried out using the PLIF method; and with this view, fluorescent particles for PIV studies and the dye Rhodamine G were added to distilled water. An optical threshold filter was installed on the lens of the video camera. When processing images to obtain data on the local gas content, only bubbles falling into the plane of the laser beam were considered (the boundary glows, casting a shadow).