Impact of wave energy converters on infragravity waves: An experimental investigation
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Date
2024
Authors
Sergiienko, N.Y.
Cannard, P.A.
Cui, L.
Leontini, J.S.
Manasseh, R.
Cazzolato, B.
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Ocean Engineering, 2024; 309(Part 1):118345-1-118345-10
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Nataliia Y. Sergiienko, Patrick A. Cannard, Lidong Cui, Justin S. Leontini, Richard Manasseh, Benjamin Cazzolato
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Abstract
Infragravity waves play an important role in the nearshore water dynamics and significantly impact coastal processes and port operations. One potential way to reduce the influence of long waves is to take advantage of wave energy converters (WECs) and their ability to alter the downstream wavefield. A small-scale laboratory experiment is used to explore the effect of WECs on the infragravity wave generation over the steep reef platform. The long wave is generated using a bichromatic wave group, and the WECs are designed as oscillating water columns that resonate at the wave group harmonics, providing the greatest impact on the wavefield dynamics. The experiments are conducted in five stages progressively increasing the complexity of the tested set-up. The results demonstrate that the reef platform causes a significant amplification of the infragravity wave amplitude for the tested wave conditions. Placing the WECs upstream of the reef platform reduces the long wave amplitude over the reef flat, where maximum attenuation occurs with the largest number of WECs tested.
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© 2024 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).