Hossein, F;
Materazzi, M;
Lettieri, P;
Angeli, P;
(2021)
Application of acoustic techniques to fluid-particle systems – A review.
Chemical Engineering Research and Design
, 176
pp. 180-193.
10.1016/j.cherd.2021.09.031.
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Abstract
Acoustic methods applied to opaque systems have attracted the attention of researchers in fluid mechanics. In particular, owing to their ability to characterise in real-time, non-transparent and highly concentrated fluid-particle systems, they have been applied to the study of complex multiphase flows such as fluidised beds. This paper gives an overview of the physical principles and typical challenges of ultrasound and acoustic emission AE methods when applied to fluid-particle systems. The principles of ultrasound imaging are explained first. The measurement techniques and signal processing methodologies for obtaining velocity profiles, size distribution of the dispersed phases, and solid volume fraction are then discussed. The techniques are based on the measurement of attenuation, sound speed, frequency shift, and transit time of the propagated sound wave. A description of the acoustic emission technique and applications to fluid-particle systems are then discussed. Finally, extensions and future opportunities of the acoustic techniques are presented.
| Type: | Article |
|---|---|
| Title: | Application of acoustic techniques to fluid-particle systems – A review |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.cherd.2021.09.031 |
| Publisher version: | https://doi.org/10.1016/j.cherd.2021.09.031 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Fluidised Bed, Signal Processing, Ultrasound, Particle Size Distribution PSD, Velocity Profile, Fluid Particle Flows |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10135893 |
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