首页|Experimental Investigation of Overflow on the Lee Side of River Groins due to Long-Period Primary Ship-Induced Waves Using Particle Image Velocimetry Analysis

Experimental Investigation of Overflow on the Lee Side of River Groins due to Long-Period Primary Ship-Induced Waves Using Particle Image Velocimetry Analysis

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  • NETL
  • NSTL
  • Asce-Amer Soc Civil Engineers
The passage of ships in confined waterways creates a stern wave that can overflow bank protection structures such as groins. This overflow, due to the long-period primary ship-induced waves, can be high in velocity, especially at the lee-side slope of groins, potentially causing significant damage to the structure. This study derives an equation to express overflow velocities, intended as a design tool for groins exposed to these types of waves. A detailed experimental investigation was performed on four physical models of groins with different slopes and stone sizes in the armor layer under the influence of different hydraulic heads. Particle image velocimetry (PIV) was used to measure the flow velocities at the crest and lee sides of the structure. All PIV measurements were performed thrice under free-flow conditions with no initial water level at the lee side of the structure. The depth- and time-averaged flow velocities (U_(avg)) were extracted from four positions along the lee-side slope and accelerated from 0.7 to 2.2 m/s. A dimensionless equation of the overflow velocities was obtained as a function of the hydraulic head (h), slope (θ), freeboard (R_c), and nominal rock diameter (d_(n50)).

Primary ship-induced wavesFlow velocity equationsRiver groinsParticle image velocimetry analysisEstuarine protection structuresPhysical modeling

Ahmad AIYousif、Tobias van Batenburg、Sargol Memar、G. Mailing、B. Hofland

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Civil Engineering Dept., Kuwait Univ., P.O. Box 5969, Safat 13060, Kuwait||Faculty of Civil Engineering and Geosciences, Delft Univ. of Technology, Stevinweg 1, Delft 2628 CN, Netherlands

Dept. of Hydraulics for Infrastructure and Industry, Deltares, Boussinesqweg 1, 2629 HV Delft, The Netherlands

Department of Engineering and Estimating, Van Oord Dredging and Marine Contractors, Schaardijk 211, 3063 NH Rotterdam, The Netherlands

Federal Waterways Engineering and Research Institute (BAW), Dept. of Coastal Engineering, Wedeler Landstr 157, 22559 Hamburg, Germany

Faculty of Civil Engineering and Geosciences, Delft Univ. of Technology, Stevinweg 1, Delft 2628 CN, Netherlands

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2025

10.1061/JWPED5.WWENG-2185

Journal of waterway, port, coastal and ocean engineering

Journal of waterway, port, coastal and ocean engineering

ISSN：0733-950X
年,卷(期)：2025.151(3)
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