ORIGINAL RESEARCH article
Front. Mar. Sci.
Sec. Coastal Ocean Processes
Volume 12 - 2025 | doi: 10.3389/fmars.2025.1594844
This article is part of the Research TopicAdvances in modeling of coastal and estuarine waters: assessing stressors, analyzing extreme events, and addressing current and future risksView all articles
Numerical Simulation of Wave Attenuation and Shoreline Response in a Coastal Region with Submerged Breakwater
Provisionally accepted
- 1Korea Institute of Ocean Science and Technology (KIOST), Busan, Republic of Korea
- 2Department of Civil Engineering, Kunsan National University, Kunsan, Republic of Korea
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The non-hydrostatic numerical model NHWAVE was employed to investigate the hydrodynamic behavior of a coastal region with submerged breakwater, focusing on the structural dimensions and incident wave conditions. In the numerical experiment, regular waves of varying specifications were used as incident waves, and the breakwater dimensions were adjusted based on the offshore distance from the shoreline and its vertical distance from the water surface to the crest. The above experimental conditions calculated water surface displacement and velocity at different depths.The shoreline response, including erosion and accretion, was predicted by assessing nearshore flow patterns, while the wave attenuation effect was quantified based on wave height variations.The results indicate that wave attenuation is significantly influenced by breaking-induced currents generated during wave interaction with the breakwater crest. A shorter vertical distance from submerged breakwater crest resulted in stronger breaking-induced currents. The rotational direction of vortex-induced nearshore flow patterns significantly influences shoreline response, resulting in either erosion or accretion. These findings provide insights into the hydrodynamic and sediment transport mechanisms associated with submerged breakwaters, contributing to optimizing coastal protection measures.
Keywords: Non-hydrostatic numerical model, NHWAVE, Submerged breakwater, wave attenuation, Shoreline response
Received: 17 Mar 2025; Accepted: 20 May 2025.
Copyright: © 2025 Roh, Gwon, Hwang, Lee, Jang and Kim. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Hyung-Suk Kim, Department of Civil Engineering, Kunsan National University, Kunsan, Republic of Korea
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