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Abstract
A numerical model of a vertical breakwater integrated with wave absorption chamber has been tested against regular wave in a virtual wave flume. The open source Smoothed-Particles Hydrodynamics, or SPH, (Lagrangian type) software called DualPSHysics was deployed for the simulation. Both the multiphase (air-water) and single-phase (water only) fluid were considered and compared with an experimental result. Single-phase and multiphase capture the water column elevation in an open chamber within a ratio of 0.92 and 0.70, respectively, when compared to experiments. However, single-phase is not able to capture the fully closed chamber effect. It is found that inside the fully closed chamber, the multiphase SPH captures the maximum (compressed) water elevation well but overestimates the air compression by a factor of 1.5.References
Pawitan, Vicinanza, Allsop, Bruce (2020). Front wall and in-chamber impact loads on a breakwater-integrated oscillating water column. Journal of Waterway, Port, Coastal, and Ocean Engineering, 146(5), p.04020037.
Viviano, A., Naty, S., Foti, E., Bruce, T., Allsop, W. and Vicinanza, D., 2016. Large-scale experiments on the behaviour of a generalised Oscillating Water Column under random waves. Ren. Energy, 99, pp.875-887.
Lu, X., Cherfils, J.M., Pinon, G., Rivoalen, E., Kimmoun, O. and Brossard, J., 2021. SPH numerical computations of wave impact onto a vertical wall with experimental comparisons. Comptes Rendus. Mécanique, 349(1), pp.117-143.
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Copyright (c) 2023 Krisna Adi Pawitan, Hamid ElDarwich, Maria M. Garlock