Coastal structures such as oil platforms, wind turbines and marine energy devices are constantly exposed to the harsh environment, which requires a deep understanding of the wave interaction with coastal structures to make them reliable, safe and cost-effective.
In order to study the linear wave interaction with a bottom-mounted body near a vertical wall, Tong Phil Sung, a student at the Faculty of Shipbuilding and Ocean Engineering, has proposed a method of applying an exact DtN boundary condition on the artificial boundary for numerical analysis. First, he adopted the mirror image method to transfer the horizontally semi-infinite water domain into a horizontally infinite water domain. Then, he made an artificial boundary enveloping the original bodies and their imaginary bodies, by which the entire fluid domain is separated into an interior subregion and an exterior subregion.
He applied the proposed method to a bottom-mounted circular cylinder, and the results were in good agreement with the literature.
In addition, he has extended it to the cases of a single rounded-rectangular cylinder to consider the effect of incident angle on exciting forces.
The proposed model can be applied to study the wave interaction with a bottom-mounted marine structure with irregular configurations in front of a vertical wall like a breakwater.
You can find more details in his paper “Wave Interaction with a Bottom‑Mounted Body in Front of a Vertical Wall Using an Exact DtN Boundary Condition” in “Iranian Journal of Science and Technology, Transactions of Civil Engineering” (SCI).
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