The 24th IAHR-APD Congress (24th IAHR-APD Congress)

256 / 2024-02-28 16:49:50

Hydrodynamic performance of a submerged flexible membrane breakwater on a permeable foundation

Eigenfunction expansion boundary element method,Numerical model;,Submerged flexible membrane breakwater,Permeable foundation,Energy dissipation

Submerged flexible membrane breakwater (SFMB) has a better wave dissipation effect than the rigid submerged breakwater, and has been widely used in ocean engineering. In order to truly reflect the operation of the SFMB in the ocean environment, the hydrodynamic performance of the SFMB on a permeable foundation is studied by the eigenfunction expansion boundary element method (EEBEM), and various motion responses of the SFMB under waves are also investigated. After verifying the accuracy and effectiveness of the model, the hydrodynamic performance (wave force, membrane tension, wave transmission, reflection and energy dissipation coefficients) and motion responses of the SFMB are simulated. The results show that there is a synergistic effect between the SFMB and the permeable foundation, and the energy dissipation of the SFMB on the permeable foundation is further increased. Besides, reasonable adjustment of the structural parameters of the SFMB can help to significantly improve the wave dissipation effect, reduce the acting forces and improve the stability of the SFMB.