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Article

Laboratory Study on Flow Characteristics during Solitary Waves Interacting with a Suspended Horizontal Plate

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
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Academic Editors: Chang Lin and James Yang
Water 2022, 14(15), 2386; https://doi.org/10.3390/w14152386
Received: 8 June 2022 / Revised: 27 July 2022 / Accepted: 29 July 2022 / Published: 1 August 2022
(This article belongs to the Special Issue Advances in Experimental Hydraulics, Coast and Ocean Hydrodynamics)
A series of laboratory experiments were conducted to investigate the 2–D kinematic field evolution around a suspended plate induced by solitary waves. The plate–type structure was rigid and suspended above the mean water level, while the solitary waves were generated by the wave maker to simulate the nearshore tsunami waves. The ratio of incident wave height to water depth was in the range of [0.200, 0.333], and the structural suspended height was in the range of [0.067, 0.200]. The velocity field around the deck was measured using the non–intrusive image–based PIV (Particle Image Velocimetry) method. As a result, the flow evolution was categorized into three phases: green water tongue generated, green water overtopping, and flow separation. Flow evolutions in different conditions presented obvious similarities in general but several differences in detail. The measured maximum horizontal and vertical velocities were around 1.9 C0 and 0.8 C0, respectively, where C0 is the maximum flow speed of the incident wave. Ritter’s analytical solution for the dam–break flow problem was examined and compared with the measured data. The accuracy of this solution for the present subject is significant in the period of T ∈ (0.6, 0.9). The adequate experimental data are valuable as a benchmark problem for further numerical model refinement and the improvement of fluid theory. View Full-Text
Keywords: solitary wave; green water; wave overtopping; flow field; particle image velocimetry (PIV); dam–break flow solitary wave; green water; wave overtopping; flow field; particle image velocimetry (PIV); dam–break flow
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MDPI and ACS Style

Niu, X.; Ma, Y.; Dong, G. Laboratory Study on Flow Characteristics during Solitary Waves Interacting with a Suspended Horizontal Plate. Water 2022, 14, 2386. https://doi.org/10.3390/w14152386

AMA Style

Niu X, Ma Y, Dong G. Laboratory Study on Flow Characteristics during Solitary Waves Interacting with a Suspended Horizontal Plate. Water. 2022; 14(15):2386. https://doi.org/10.3390/w14152386

Chicago/Turabian Style

Niu, Xuyang, Yuxiang Ma, and Guohai Dong. 2022. "Laboratory Study on Flow Characteristics during Solitary Waves Interacting with a Suspended Horizontal Plate" Water 14, no. 15: 2386. https://doi.org/10.3390/w14152386

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