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Generation of Two‐Phase Air‐Water Flow with Fine Microbubbles
Author(s) -
Levitsky Inna,
Tavor Dorith,
Gitis Vitaly
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500492
Subject(s) - microbubbles , bubble , body orifice , mechanics , turbulence , duct (anatomy) , materials science , vortex , two phase flow , liquid bubble , flow (mathematics) , mechanical engineering , acoustics , engineering , physics , ultrasound , medicine , pathology
Aiming at the development of a low‐cost technology for multipurpose water and surface treatment in the chemical industry and beyond, using microbubbles, a novel scheme of liquid‐gas interaction within a specially designed bubble generator was tested. Its efficiency for the production of microbubbles with a size distribution in the micron range is confirmed. The basic element of the device is a vortex chamber with water supply through tangential ducts, while the gas (air) is introduced in a highly turbulent swirling flow of water in radial direction through the orifice in the gas supply duct, located on the chamber axis. Bubble diameters, bubble velocities in the pipe flow and effect of the output pressure on the bubble size distribution were studied.