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Hydrodynamic processes at the water-sediment interface of streambeds

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 coher...

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Autore principale: Detert, Martin
Natura: Online
Lingua:tedesco
Pubblicazione: KIT Scientific Publishing 2021
Soggetti:
TA1-2040
open channel flow
pressure sensors
coherent structures
gravel bed
PIV
thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
Accesso online:35163
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Riassunto: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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