In situ characterization of mixing and sedimentation dynamics in an impinging jet ballast tank via acoustic backscatter

Bux, Jaiyana, Paul, Neepa, Hunter, Timothy N. , Peakall, Jeffrey, Dodds, Jonathan M. and Biggs, Simon (2017) In situ characterization of mixing and sedimentation dynamics in an impinging jet ballast tank via acoustic backscatter. AIChE Journal, 63 7: 2618-2629. doi:10.1002/aic.15683


Author Bux, Jaiyana
Paul, Neepa
Hunter, Timothy N.
Peakall, Jeffrey
Dodds, Jonathan M.
Biggs, Simon
Title In situ characterization of mixing and sedimentation dynamics in an impinging jet ballast tank via acoustic backscatter
Formatted title
In situ characterization of mixing and sedimentation dynamics in an impinging jet ballast tank via acoustic backscatter
Journal name AIChE Journal   Check publisher's open access policy
ISSN 1547-5905
0001-1541
Publication date 2017-03-02
Year available 2017
Sub-type Article (original research)
DOI 10.1002/aic.15683
Open Access Status Not yet assessed
Volume 63
Issue 7
Start page 2618
End page 2629
Total pages 12
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Language eng
Abstract Impinging jets are utilized in numerous applications, including nuclear waste treatment, for both the erosion of sediment beds and maintaining particulates in suspension. Pulse-echo ultrasonic methods offer great potential for the in situ monitoring of critical mixing and settling dynamics, in concentrated dispersions. A non-active scaled version of a Highly Active Storage Tank at Sellafield, UK, was profiled with an acoustic backscatter system under various jet firing conditions. An advanced analysis technique enabled the direct quantification of dispersion concentration changes from the converted backscatter attenuation. Hence, the erosion and mixing capability of the jets, and settling kinetics were characterized. It was found that jet operation alone provided inadequate localized mixing of eroded sediment. An additional air-lift process operation was required to hinder the rapid re-settling of dispersed particulates.
Keyword Acoustic backscatter
Erosion
Fluid mixing
Impinging jets
Sedimentation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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