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Ultrasonic Measurement for Two/Three‐Phase Flow Detection
Author(s) -
Zheng Ying
Publication year - 2003
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450810212
Subject(s) - ultrasonic sensor , ultrasound , phase (matter) , attenuation , materials science , multiphase flow , acoustics , flow (mathematics) , two phase flow , mechanics , flow measurement , ultrasonic flow meter , optics , physics , quantum mechanics
Ultrasonic technique offers a good potential for phase holdup measurements in multiphase systems. Experiments were performed in an expanded fluidized bed consisting of water, air bubbles and/or glass beads. In this research note, the instantaneous signals of ultrasound were, for the first time, analyzed for the purpose of phase holdup determination. The results show that the fluctuations of the speed and attenuation of ultrasound are a well‐defined function of solid and gas holdups in a multiphase system.