Ultrasound velocity profile (UVP) measurements in shallow open-channel flows

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper is concerned with velocity measurements in shallow water flows by using Ultrasonic Velocity Profile (UVP) probes. The measurements were made in a 10 m long, 0.4 m wide flume whose slope is 0.00117. Diagonal and horizontal positioning of a single probe and the combination of two probes were tested as configurations of the UVP probes. Streamwise and transverse velocities were obtained. A sensitivity analysis was performed to UVP parameters, namely to the distance of the window for each measurement and to the distance between each measuring point. The influence of four different seeding materials was also assessed. Filters for eliminating noise and spikes were applied. For 1D measurements, UVP streamwise velocities were compared with Pitot tube measurements. For 2D measurements, streamwise velocities and turbulent intensities were compared with known laws. The results show the importance of i) setting optimal UVP parameters values, ii) of positioning adequately the UVP probes and iii) using appropriate seeding.
Original languageUnknown
Title of host publicationEuropean IAHR Congress
Pagesn.a.
Publication statusPublished - 1 Jan 2010
Event1st European IAHR Congress -
Duration: 1 Jan 2010 → …

Conference

Conference1st European IAHR Congress
Period1/01/10 → …

Cite this

@inproceedings{a5120eebfdba4b7bbd94079895a787fd,
title = "Ultrasound velocity profile (UVP) measurements in shallow open-channel flows",
abstract = "This paper is concerned with velocity measurements in shallow water flows by using Ultrasonic Velocity Profile (UVP) probes. The measurements were made in a 10 m long, 0.4 m wide flume whose slope is 0.00117. Diagonal and horizontal positioning of a single probe and the combination of two probes were tested as configurations of the UVP probes. Streamwise and transverse velocities were obtained. A sensitivity analysis was performed to UVP parameters, namely to the distance of the window for each measurement and to the distance between each measuring point. The influence of four different seeding materials was also assessed. Filters for eliminating noise and spikes were applied. For 1D measurements, UVP streamwise velocities were compared with Pitot tube measurements. For 2D measurements, streamwise velocities and turbulent intensities were compared with known laws. The results show the importance of i) setting optimal UVP parameters values, ii) of positioning adequately the UVP probes and iii) using appropriate seeding.",
author = "Leal, {Jo{\~a}o Gouveia Apar{\'i}cio Bento}",
year = "2010",
month = "1",
day = "1",
language = "Unknown",
pages = "n.a.",
booktitle = "European IAHR Congress",

}

Leal, JGAB 2010, Ultrasound velocity profile (UVP) measurements in shallow open-channel flows. in European IAHR Congress. pp. n.a., 1st European IAHR Congress, 1/01/10.

Ultrasound velocity profile (UVP) measurements in shallow open-channel flows. / Leal, João Gouveia Aparício Bento.

European IAHR Congress. 2010. p. n.a.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Ultrasound velocity profile (UVP) measurements in shallow open-channel flows

AU - Leal, João Gouveia Aparício Bento

PY - 2010/1/1

Y1 - 2010/1/1

N2 - This paper is concerned with velocity measurements in shallow water flows by using Ultrasonic Velocity Profile (UVP) probes. The measurements were made in a 10 m long, 0.4 m wide flume whose slope is 0.00117. Diagonal and horizontal positioning of a single probe and the combination of two probes were tested as configurations of the UVP probes. Streamwise and transverse velocities were obtained. A sensitivity analysis was performed to UVP parameters, namely to the distance of the window for each measurement and to the distance between each measuring point. The influence of four different seeding materials was also assessed. Filters for eliminating noise and spikes were applied. For 1D measurements, UVP streamwise velocities were compared with Pitot tube measurements. For 2D measurements, streamwise velocities and turbulent intensities were compared with known laws. The results show the importance of i) setting optimal UVP parameters values, ii) of positioning adequately the UVP probes and iii) using appropriate seeding.

AB - This paper is concerned with velocity measurements in shallow water flows by using Ultrasonic Velocity Profile (UVP) probes. The measurements were made in a 10 m long, 0.4 m wide flume whose slope is 0.00117. Diagonal and horizontal positioning of a single probe and the combination of two probes were tested as configurations of the UVP probes. Streamwise and transverse velocities were obtained. A sensitivity analysis was performed to UVP parameters, namely to the distance of the window for each measurement and to the distance between each measuring point. The influence of four different seeding materials was also assessed. Filters for eliminating noise and spikes were applied. For 1D measurements, UVP streamwise velocities were compared with Pitot tube measurements. For 2D measurements, streamwise velocities and turbulent intensities were compared with known laws. The results show the importance of i) setting optimal UVP parameters values, ii) of positioning adequately the UVP probes and iii) using appropriate seeding.

M3 - Conference contribution

SP - n.a.

BT - European IAHR Congress

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