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Article

Collinear Interaction of Waves and Current in the Presence of Ripple in the U-Tube

Department of Engineering, University of Messina, 98166 Messina, Italy
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Author to whom correspondence should be addressed.
Academic Editor: Luca Martinelli
Water 2022, 14(3), 470; https://doi.org/10.3390/w14030470
Received: 10 January 2022 / Revised: 1 February 2022 / Accepted: 3 February 2022 / Published: 4 February 2022
(This article belongs to the Special Issue Wave-Driven Processes in the Coastal Zones)
Ripple formation and evolution as well as vortex separation along the bedform profile strongly influence surface waves and sediment transport. These features were investigated in a U-Tube at the Hydraulics Laboratory of the University of Messina. During the experimental campaign, tests in the presence of wave only, current only, and collinear wave plus current in wave dominated regime were carried out. The experiments involved both live bed and fixed bed conditions. It was observed that, when the current superimposes to the wave, a longer time is required for the bedforms to stabilize; the vortex separating at the ripple crest reduces with respect to the wave only case. Accordingly, in the fixed rippled bed case, velocity measured in current only condition is larger than that in the wave plus current flow. As vortex shedding influences the way sediments are transported close to the bed, the obtained results may improve the present knowledge on wave current interaction in the presence of bedforms with repercussions in turn on sediment dynamics. View Full-Text
Keywords: evolution of ripples; sea bottom morphology; vortex structures; mean velocity evolution of ripples; sea bottom morphology; vortex structures; mean velocity
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MDPI and ACS Style

Ruggeri, A.; Faraci, C. Collinear Interaction of Waves and Current in the Presence of Ripple in the U-Tube. Water 2022, 14, 470. https://doi.org/10.3390/w14030470

AMA Style

Ruggeri A, Faraci C. Collinear Interaction of Waves and Current in the Presence of Ripple in the U-Tube. Water. 2022; 14(3):470. https://doi.org/10.3390/w14030470

Chicago/Turabian Style

Ruggeri, Alessia, and Carla Faraci. 2022. "Collinear Interaction of Waves and Current in the Presence of Ripple in the U-Tube" Water 14, no. 3: 470. https://doi.org/10.3390/w14030470

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