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Transducer design for clamp-on guided wave flow measurement in thin-walled pipes

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Smith, Luke, Li, Zhichao and Dixon, Steve M. (2022) Transducer design for clamp-on guided wave flow measurement in thin-walled pipes. IEEE Sensors Journal, 22 (11). 10613 -10619. doi:10.1109/JSEN.2022.3169283 ISSN 1530-437X.

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Official URL: http://dx.doi.org/10.1109/JSEN.2022.3169283

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Abstract

Clamp-on ultrasonic transit time difference flow meters provide opportunities for metering where it is impractical or undesirable to cut into an existing pipeline to install an alternative flow meter. Up until now, it has been difficult to perform this type of measurement on thin-walled metal pipes, due to the difficulty of interpreting the guided wave modes in the combined pipe wall and internal fluid system, but a new method has been reported recently that utilises these guided wave modes for flow measurement. Through computational modelling, and construction and testing of different transducers, the design considerations for clamp-on transducers are highlighted and their impact on guided wave flow rate measurement is evaluated. The design features considered include a curved contact face to provide focusing of the ultrasound within the pipe and a scattering surface to reduce internal reflections. It is found that additional unwanted ultrasonic modes can be minimised by ultrasonic transducer wedge design features such as profiling the curvature of the transducer to conform to the pipe wall or creating a scattering edge to minimise internal wedge reflections. It is also observed that minimising these unwanted modes does not offer any advantage for the transit time difference measurement used in calculating flow.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TC Hydraulic engineering. Ocean engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Electromechanical devices -- Design and construction, Flow meters -- Design and construction, Huygens' principle, Ultrasonic transducers
Journal or Publication Title: IEEE Sensors Journal
Publisher: Institute of Electrical and Electronic Engineers
ISSN: 1530-437X
Official Date: 1 June 2022
Dates:
DateEvent
1 June 2022Published
21 April 2022Available
21 April 2022Accepted
Volume: 22
Number: 11
Page Range: 10613 -10619
DOI: 10.1109/JSEN.2022.3169283
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 27 April 2022
Date of first compliant Open Access: 28 April 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDUniversity of Warwickhttp://dx.doi.org/10.13039/501100000741
EP/S023275/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
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