Two-way coupling model for wave-induced oscillatory soil response around marine structures

Considerable efforts have been devoted to the topic of wave–seabed interactions in last two decades because growing offshore activities. The existing studies based on one-way coupling approach. In this study, a new two-way algorithm is proposed overcome contradiction at fluid–sediment interface between physical process and theoretical models. numerical results indicates that seabed responses obtained by model are slightly lower than model. However, significantly affects Shields number would further affect scour process. Parametric analysis larger wave height, current velocity soil permeability smaller water depth, shear modulus saturation degree increase difference algorithms. Meanwhile, algorithms significant around mono-pile dumbbell cofferdam, compared with case without structure.