2024 Volume 80 Issue 17 Article ID: 24-17203
The seaward side of coastal dike is more vulnerable to high waves than the landward side because it is greatly affected by scouring in front of coastal dike. Therefore, designing resilient structures of coastal dike against high waves requires to estimate topographic changes in front of coastal dike. Hydraulic experiments, which are a method to estimate scouring depth, are difficult to conduct under many conditions because they are expensive and time consuming.
In this study, we calculated wave-induced topographic changes in front of coastal dike using a three-dimensional coupled fluid-structure-sediment interaction model. The accuracy of the calculation was verified by comparing the calculated scouring depths and the measured scouring depths in large-scale hydraulic experiments. The results show that vortices and the maximum scouring depths in front of coastal dike can be well reproduced with the model.
