Journal article
Techniques for measuring bulge–scar pattern of free surface deformation and related velocity distribution in shallow water flow over a bump
Experiments in fluids, Vol.55(4), pp.1-15
04/16/2014
DOI: 10.1007/s00348-014-1721-9
Abstract
One of the unsteady features of shallow water free surface waves over a bump is the bulge–scar pattern of the free surface deformation. An imaging technique is developed to measure the duration, displacement and size of the bulge–scar pattern from the bump top to the primary wave crest. A unique configuration of particle image velocimetry is used to measure the velocity distribution under the visualized free surface bulge at the primary wave trough. Test results indicate that the bulge–scar pattern of the free surface deformation is related to a stream-wise vortex pair in the secondary flow over the bump. The new measurement techniques may work together with the conventional measurement techniques to obtain a complete database for the shallow water free surface instability over the bump.
Details
- Title: Subtitle
- Techniques for measuring bulge–scar pattern of free surface deformation and related velocity distribution in shallow water flow over a bump
- Creators
- Lichuan Gui - University of IowaHyunse Yoon - University of IowaFrederick Stern - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Experiments in fluids, Vol.55(4), pp.1-15
- Publisher
- Springer Berlin Heidelberg
- DOI
- 10.1007/s00348-014-1721-9
- ISSN
- 0723-4864
- eISSN
- 1432-1114
- Language
- English
- Date published
- 04/16/2014
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984196651002771
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