CFD Modelling of Wave-Induced Forces on Berm Breakwater Crown Walls

Date

2025-8

Author

Erdoğan, Mustafa

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In the literature there is no formulation focuses on the wave induced forces on a berm breakwater crown wall. To gather a practical approach focusing on hardly reshaping berm breakwaters, Computational Fluid Dynamics (CFD) simulations are carried out using IHFOAM solver based on OpenFOAM CFD library considering different wave and geometric characteristics such as berm width, recession, crest height, crown wall height and crown wall elevation. Initially, numerical model is validated against the only available physical model study (Torum et al., 2012) in the literature. Model cross-sections are designed utilizing the well-established methodology by Van der Meer and Sigurdarson (2016). Various wave series are generated by JONSWAP spectrum with minimum 1000 number of waves satisfying shallow water conditions. The wave-induced pressures along the front wall and the horizontal base slab of the crown-wall are outputted with desired sampling rates and these pressures are integrated to capture forces and moments acting on the crown wall in both vertical and horizontal directions. The variations in the wave-induced loading with respect to wave and geometrical characteristics are presented and discussed. Moreover, non-linear regression analysis is performed considering the parameters affecting the force and moments acting on the crown walls based on the non-dimensional analysis to establish a methodology to predict wave loading. Finally, the loading estimations using the newly generated formulation are compared to the available methodologies that are used to estimate wave-induced loading on the crown walls of single-sloped mound breakwaters.

Subject Keywords

CFD, OpenFOAM, Crown wall, Hardly-reshaping berm breakwaters

URI

https://hdl.handle.net/11511/115585

Collections

Graduate School of Natural and Applied Sciences, Thesis