The seawall is a classic structure for coastal protection. The ability to predict the wave loading and runup on the seawall plays a critical role in the design of the seawall, particularly in a high sea state and/or during a storm condition involving wave breaking and violent wave impact. This paper contributes to the numerical comparative study organized by the International Hydrodynamics Committee at the 32nd International Ocean and Polar Engineering Conference (ISOPE 2022), in which the wave load on a curved seawall with different scales was considered. The computational fluid dynamic software STAR-CCM+ was used to predict the wave elevations and wave-induced pressure on the seawall, as well as to quantify the turbulence effects through comparing the results from a laminar flow simulation and the corresponding large eddy simulation. It can be concluded that the results of the present study can reasonably capture the feature of the wave impact observed in the experimental data. More important, the results confirm that the turbulence effect is insignificant during the impact for both small-scale and full-scale modeling.
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