Simulation of caisson breakwater movement using 2-D SPH

Benedict D. Rogers, Robert A. Dalrymple, Peter K. Stansby

    Research output: Contribution to journalArticlepeer-review


    Smoothed Particle Hydrodynamics (SPH) is used to simulate the movement of a caisson breakwater in the surf zone. The open-source code SPHysics is used with a Riemann solver-based formulation. The friction force between the moving caisson and the bed is modelled with a transition from static to dynamic friction force. Results are presented for two-dimensional simulations and compared with experiments for the movement of a caisson breakwater under the forcing of periodic waves. Promising agreement with experimental data is obtained for the displacement and the horizontal forces on the caisson. It is demonstrated that the peak impact forces are better captured using finer resolution and that a Riemann solver-based formulation produces a better agreement with experiment for the predicted caisson displacement than conventional SPH. © 2010 International Association of Hydraulic Engineering and Research.
    Original languageEnglish
    Pages (from-to)135-141
    Number of pages6
    JournalJournal of Hydraulic Research
    Issue number1
    Publication statusPublished - 2010


    • Caisson breakwater
    • displacement
    • impact forces
    • periodic waves
    • smoothed particle hydrodynamics


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