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Hydrodynamic Processes at the Water-sediment Interface of Streambeds
Martin Detert
2008
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Simultaneous 2D pressure and 2D velocity information at the rough water-sediment interface of streambeds were gained by a newly developed measurement setup. In the bed the pressure fluctuations decay exponentially within the first 1-2 equivalent sand roughnesses. Structural findings concerning coherent flow structures are consistent with models originally developed for smooth walls. A significant bed destabilizing flow-pressure pattern was identified for the first time.
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Keywords
- coherent structures
- gravel bed
- open channel flow
- PIV
- pressure sensors
Links
DOI: 10.5445/KSP/1000008267Editions