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We perform a simulation-based study on the suspension and transport of sediment under a plunging wave breaker. Navier–Stokes equations for a multi-phase incompressible flow are solved using an in-house finite-difference code. The air–water interface is captured by using the coupled level-set and volume-of-fluid method. The convection–diffusion equation with a settling term for a passive scalar is...
Direct simulations of the Navier–Stokes equations are performed to investigate the interaction between a nonlinear wave at the water surface and an interfacial wave at the fluid-mud layer below. A level-set method is employed to capture the air–water and water–mud interfaces. Despite the nonlinearity of the governing equations, the direct numerical simulation shows that the total wave-damping rate...
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