AbstractConventional emerged rubble mound breakwaters are commonly built to protect ports and marinas from direct wave action. With increased high-valued developments in the coastal region, engineers have to design innovative coastal protection structures that can provide adequate harbor tranquility with minimum visual impact. One such solution is the combination of a submerged breakwater with a floating breakwater. In this paper, the open-source CFD model REEF3D (Bihs et al. 2016) is used to simulate wave interaction with a submerged porous breakwater with a floating breakwater on the lee side. The wave interaction with the submerged porous breakwater is validated by comparison with experimental data from Hieu and Tanimoto (2006). The validated model is then used to simulate the wave interaction with a combination of the submerged breakwater and the floating breakwater. The transmission coefficient across the combination is calculated to be about 12.5%, demonstrating the possibility to provide harbor tranquility with minimum visual impact.
Bihs, Kamath, Alagan Chella, Aggarwal, Arntsen (2016): A new level set numerical wave tank with improved density interpolation for complex wave hydrodynamics, Computers and Fluids, vol. 140, pp. 191-208.
Hieu, Tanimoto (2006): Verification of a VOF-based twophase flow model for wave breaking and wave structure interactions, Ocean Engineering, vol. 33, pp. 1565-1588.
Sasikumar, Bihs, Kamath, Musch, Arntsen (2017): Numerical Investigation of Wave Kinematics Inside Berm Breakwaters With Varying Berm Geometry Using REEF3D. 36th International Conference on Ocean, Offshore and Arctic Engineering, pp. V07AT06A035.