Abstract
A particle method is a state-of-the-art method in computational fluid dynamics. The specialty of the particle method is tracking each particle that carries its own physical quantities, such as velocity, pressure, and position. Therefore, the large deformation of a free surface can be simulated. In this paper, the concept of the fully Lagrangian approach is extended in its applicability to the solid particle with new particle interaction models, which are the friction and drag models. The newly developed particle method with the new particle interaction models simulated mobile sea-bed behavior under very violent waves due to the broken dam problem. The numerical results were compared to corresponding experimental results for validation. The validated particle method demonstrated the mobile sea-bed behavior with various densities of soil particles. Furthermore, solid-particle interaction model results were also compared with those of fluid models to show the difference and to prove the implementation.
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