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- Publisher
- Springer Journals
- Copyright
- Copyright © 2010 by Springer-Verlag
- Subject
- Engineering; Engineering Thermodynamics, Heat and Mass Transfer; Fluid- and Aerodynamics; Engineering Fluid Dynamics
- ISSN
- 0723-4864
- eISSN
- 1432-1114
- DOI
- 10.1007/s00348-010-1021-y
- Publisher site
- See Article on Publisher Site
Abstract
A dam-break flow is an example of an extremely transient free-surface flow with various time and space scales. The importance of studying this type of flow is directly connected with the risk assessment of a dam and with the effects of such a catastrophe on human activities in the valley downstream. In this paper, an experimental study of the dam-break flow is presented. While a great part existing studies about dam-break flows are focused on variables such as the water-front velocity and the water level, the present paper is focused on the measurement of velocity profiles over the whole flow depth within the dam-break wave. For such study and due to the characteristics of the flow itself, image acquisition techniques were used. The velocity field was obtained by means of a Particle Tracking Velocimetry (PTV) algorithm based on Voronoï patterns’ matching. A comparison with the application of a PIV algorithm to the raw data is provided. Finally, results for the velocity profiles and water elevation are presented and discussed for two different flow conditions.
Journal
Experiments in Fluids – Springer Journals
Published: Dec 23, 2010