Numerical investigation of the hydrodynamic response of an impermeable sea-wall subjected to artificial submarine landslide-induced tsunamis

Abstract

Landslide-induced tsunamis are common natural hazards that potentially affect the safety and stability of waterfront structures. A numerical tank was constructed using FLOW-3D to investigate the hydrodynamic response of the sea-wall subjected to artificial submarine landslide-induced tsunamis, including the hydrodynamic load and wave run-up height. Initially, the landslideinduced tsunami model was calibrated using experiments to ensure high accuracy for capturing the free surface and obtaining the flow field information. Then, the sea-wall was added into the numerical tank to study the hydrodynamic response of the sea-wall. The results show that the artificial landslide successively generated two wave crests and that the hydrodynamic response of the seawall under the second crest was stronger than that under the first crest. Additionally, the effects of different influencing factors on the hydrodynamic response were discussed, respectively, and prediction equations for the hydrodynamic response considering these factors were proposed.

Three-Dimensional Modeling of Tsunami Waves Triggered by Submarine Landslides Based on the Smoothed Particle Hydrodynamics Method

“…For example, Rauter et al [15] used OpenFOAM, a multiphase solver based on FEM, to simulate the impulse waves generated by idealized landslides, and to derive the scaling relations between landslide parameters and wave amplitude. Deng et al [16] constructed a numerical tank using FLOW-3D software, based on the volume of fluid (VOF) method, to investigate the hydrodynamic response of a sea wall subjected to tsunamis generated by submarine landslides. Yavari-Ramshe and Ataie-Ashtiani [17] applied a two-layer two-phase landslide tsunami model based on FVM to simulate both subaerial and submarine landslide-generated waves.…”