DSpace UNL

RUN >
Faculdade de Ciências e Tecnologia (FCT) >
FCT Departamentos >
FCT: Departamento de Engenharia Civil >
FCT: DEC - Documentos de conferências internacionais >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10362/5033

Title: Ultrasound velocity profile (UVP) measurements in shallow open-channel flows
Authors: Leal, J. B.
Fernandes, João N.
Cardoso, António H.
Issue Date: 2010
Publisher: IAHR
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.
Description: 1st European IAHR Congress, 6-4 May, Edinburgh, Scotland
URI: http://hdl.handle.net/10362/5033
Appears in Collections:FCT: DEC - Documentos de conferências internacionais

Files in This Item:

File Description SizeFormat
Leal_2010.pdf1.11 MBAdobe PDFView/Open
Statistics
View Statistics
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Universidade Nova de Lisboa  - Statistics  - Feedback
Estamos no RCAAP Governo Português separator Ministério da Educação e Ciência   Fundação para a Ciência e a Tecnologia

Financiado por:

POS_C UE