Free surface detection in hydraulic jumps through image analysis and ultrasonic sensor measurements

Nóbrega, J. D., Schulz, H. E. and Zhu, D. Z. (2014). Free surface detection in hydraulic jumps through image analysis and ultrasonic sensor measurements. In: Hubert Chanson and Luke Toombes, Hydraulic structures and society - Engineering challenges and extremes. 5th IAHR International Symposium on Hydraulic Structures, Brisbane, Australia, (1-8). 25-27 June 2014. doi:10.14264/uql.2014.42

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Author Nóbrega, J. D.
Schulz, H. E.
Zhu, D. Z.
Title of paper Free surface detection in hydraulic jumps through image analysis and ultrasonic sensor measurements
Conference name 5th IAHR International Symposium on Hydraulic Structures
Conference location Brisbane, Australia
Conference dates 25-27 June 2014
Proceedings title Hydraulic structures and society - Engineering challenges and extremes
Journal name ISHS 2014 - Hydraulic Structures and Society - Engineering Challenges and Extremes: Proceedings of the 5th IAHR International Symposium on Hydraulic Structures
Place of Publication Brisbane, Australia
Publisher The University of Queensland
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.14264/uql.2014.42
Open Access Status DOI
ISBN 9781742721156
Editor Hubert Chanson
Luke Toombes
Start page 1
End page 8
Total pages 8
Language eng
Abstract/Summary The application of non-intrusive techniques has been sought in experimental studies involving complex hydraulic phenomena. In this sense, in the present study an ultrasonic sensor and a high speed camera were used for measurements in hydraulic jumps, in order to evaluate the free-surface characteristics. The free surface was identified in the images using relatively simple procedures of image processing. The proposed methodology for image analysis is relatively robust and produces the mean longitudinal interface profile compatible to that obtained with the ultrasonic sensor. The results of the present study include mean free surface profile, time evolution of the free surface and toe oscillation.
Keyword Hydraulic jumps
Image processing
Free surface profile
Non-intrusive techniques
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

 
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Created: Wed, 14 May 2014, 00:46:55 EST by Anthony Yeates on behalf of Scholarly Communication and Digitisation Service