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Flow velocity measurement using a spatial averaging method with two-dimensional flexural ultrasonic array technology

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Kang, Lei, Feeney, Andrew, Su, Riliang, Lines, David A., Ramadas, Sivaram Nishal, Rowlands, George and Dixon, Steve M. (2019) Flow velocity measurement using a spatial averaging method with two-dimensional flexural ultrasonic array technology. Sensors, 19 (21). 4786. doi:10.3390/s19214786

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Official URL: http://dx.doi.org/10.3390/s19214786

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Abstract

Accurate average flow velocity determination is essential for flow measurement in many industries, including automotive, chemical, and oil and gas. The ultrasonic transit-time method is common for average flow velocity measurement, but current limitations restrict measurement accuracy, including fluid dynamic effects from unavoidable phenomena such as turbulence, swirls or vortices, and systematic flow meter errors in calibration or configuration. A new spatial averaging method is proposed, based on flexural ultrasonic array transducer technology, to improve measurement accuracy and reduce the uncertainty of the measurement results. A novel two-dimensional flexural ultrasonic array transducer is developed to validate this measurement method, comprising eight individual elements, each forming distinct paths to a single ultrasonic transducer. These paths are distributed in two chordal planes, symmetric and adjacent to a diametral plane. It is demonstrated that the root-mean-square deviation of the average flow velocity, computed using the spatial averaging method with the array transducer is 2.94%, which is lower compared to that of the individual paths ranging from 3.65% to 8.87% with an average of 6.90%. This is advantageous for improving the accuracy and reducing the uncertainty of classical single-path ultrasonic flow meters, and also for conventional multi-path ultrasonic flow meters through the measurement via each flow plane with reduced uncertainty. This research will drive new developments in ultrasonic flow measurement in a wide range of industrial applications. View Full-Text

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Fluid dynamic measurements , Fluid dynamics , Fluid mechanics, Ultrasonic transducers
Journal or Publication Title: Sensors
Publisher: MDPI AG
ISSN: 1424-8220
Official Date: 4 November 2019
Dates:
DateEvent
4 November 2019Published
UNSPECIFIEDAvailable
2 November 2019Accepted
Date of first compliant deposit: 4 November 2019
Volume: 19
Number: 21
Article Number: 4786
DOI: 10.3390/s19214786
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
SACUT Project 61211European Commissionhttp://dx.doi.org/10.13039/501100000780
EP/N025393/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266

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