Turbulence structure and implications in exchange processes in high-amplitude vegetated meanders: Experimental investigation

Turbulence structure and implications in exchange processes in high-amplitude vegetated meanders: Experimental investigation

•We investigated coherent eddies and exchange processes in a large amplitude meandering flume with vegetated bed.•We verified that mass and momentum transport between vegetation the overflow is controlled by the coherent turbulent motion.•A different contribution from turbulence to the exchange mech...

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Veröffentlicht in:Advances in water resources 2018-10, Vol.120, p.114-127
Hauptverfasser: Termini, Donatella, Di Leonardo, Alice
Format: Artikel
Sprache:eng
Schlagworte:
Amplitude
Amplitudes
Aquatic plants
Curvature
Diffusion
Dye dispersion
Ejection
Exchanging
Experiments
Fluid dynamics
Fluid flow
Flumes
Lateral diffusion
Meandering
Meanders
Momentum
Rivers
Sediment
Sediment transport
Sediments
Submerged plants
Submergence
Transport
Transport processes
Turbulence
Vegetation
Vertical advection
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Beschreibung
Zusammenfassung:•We investigated coherent eddies and exchange processes in a large amplitude meandering flume with vegetated bed.•We verified that mass and momentum transport between vegetation the overflow is controlled by the coherent turbulent motion.•A different contribution from turbulence to the exchange mechanism has been observed for h/kv > 2 and for h/kv 
ISSN:0309-1708
1872-9657
DOI:10.1016/j.advwatres.2017.11.020