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Weirs. --- Open-channel flow. --- Flow meters.
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Open channel flow --- Sewers --- Channel flow --- Open channel flow --- Sewers --- Channel flow
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OPEN CHANNEL FLOW --- MATHEMATICAL MODELS --- UNSTEADY FLOW --- OPEN CHANNEL FLOW --- MATHEMATICAL MODELS --- UNSTEADY FLOW
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Water --- Open-channel flow. --- Channels (Hydraulic engineering) --- Channels (Hydraulic engineering) --- Open-channel flow. --- Water --- Aeration. --- Aeration.
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Hydraulic models. --- Open-channel flow. --- Water-supply. --- Water resources technology
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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.
open channel flow --- pressure sensors --- coherent structures --- gravel bed --- PIV
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This thesis aims to contribute to a better understanding of turbulent open channel flow, sediment erosion and sediment transport. The thesis provides an analysis of high-fidelity data from direct numerical simulation of (i) open channel flow over an array of fixed spheres, (ii) open channel flow with mobile eroding spheres, (iii) open channel flow with sediment transport of many mobile spheres. An immersed boundary method is used to resolve the finite-size particles.
sediment erosion --- CFD --- open channel flow --- sediment transport --- turbulence
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Water --- Open-channel flow. --- Channels (Hydraulic engineering) --- Aeration.
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Hydraulic measurements. --- Mesures hydrauliques --- Open-channel flow. --- Canaux (génie hydraulique)
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Hydraulic engineering. --- Hydraulic structures. --- Hydraulics. --- Open-channel flow.