Large Scale Particle Image Velocimetry for Low Velocity and Shallow Water Flows
Publication: Journal of Hydraulic Engineering
Volume 130, Issue 9
Abstract
Large scale particle image velocimetry (LSPIV) is an extension of quantitative imaging techniques for measurements of water surface velocities using inexpensive standard video equipment. The present Technical Note describes capabilities and limitations of LSPIV for low velocity shallow flows. Measurements in low velocity shallow flume flows were performed to investigate the LSPIV sensitivity to seeding density and time interval between successive images. The results show that the accuracy of the LSPIV technique does not deteriorate as the flow velocity is reduced to as low as 0.015 m/s provided an adequate seeding and suitable time difference between images are selected. The results suggest that LSPIV is well-suited for flow fields with small velocities that are often below the limit of detection of most conventional devices.
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Published In
Journal of Hydraulic Engineering
Volume 130 • Issue 9 • September 2004
Pages: 937 - 940
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Jun 25, 2002
Accepted: Dec 17, 2003
Published online: Aug 16, 2004
Published in print: Sep 2004
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