Document Type
Thesis - University Access Only
Award Date
2002
Degree Name
Master of Science (MS)
Department / School
Civil and Environmental Engineering
Abstract
Flow field measurement with Particle Image Velocirnetry (PIV) is a new measurement technique, which gives one non-intrusive, qualitative and quantitative velocity measurements of the flow field. The bow wave is a result of the pier acting as an obstruction to the flow. In this study, the relationship between the water surface profile around a 60-mm diameter circular pier and the Froude number and relative water depth was examined. Open channel PIV flow field measurements were taken around the pier on a smooth bed, focusing on the flow in front and on the side of the pier. The Froude number was in the range of 0.1 to 0.8 and the relative water depth, y1/D, was in the range of 1.0 to 3.0. Velocity vector measurements were taken at two horizontal planes, at a height of9.3-mm and 41-mm from the bed. The approach flow velocity and water depth were varied to show the effects of flow parameters on the flow pattern around the pier. The PIV measurements were compared with the Potential Flow Solution and point measurements from Ahmed and Rajaratnam (1998) and Melville and Raudkivi (1977).
Library of Congress Subject Headings
Bridges -- Foundations and piers Streamflow velocity Particle image velocimetry Scour at bridges
Format
application/pdf
Number of Pages
203
Publisher
South Dakota State University
Recommended Citation
Johnson, Kent R., "Measurements of Velocity Field at a Circular Cylinder in Open Channel Flow by Particle Image Velocimetry" (2002). Electronic Theses and Dissertations. 908.
https://openprairie.sdstate.edu/etd2/908