Application of open boundaries within a two-way coupled SPH model to simulate non-linear wave-structure interactions

T. Verbrugghe, J. M. Domìnguez, C. Altomare, A. Tafuni, P. Troch, A. Kortenhaus

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


A two-way coupling between the fully non-linear potential flow (FNPF) solver OceanWave3D and the Smoothed Particle Hydrodynamics (SPH) solver DualSPHysics is presented. At the coupling interfaces within the SPH domain, an open boundary formulation is applied. An inlet and outlet zone are filled with buffer particles. At the inlet, horizontal orbital velocities and surface elevations calculated with OceanWave3D are imposed on the buffer particles. At the outlet, horizontal orbital velocities are imposed, but the surface elevation is extrapolated from the fluid domain. Velocity corrections are applied to avoid unwanted reflections in the fluid domain. The SPH surface elevation can be coupled back to OceanWave3D, where the original solution is overwritten. The coupling methodology is validated using a 2-D test case of a floating box. Additionally, a 3-D proof of concept is shown where overtopping waves are acting on a heaving cylinder. The 2-way coupled model proofs to be capable of simulating wave propagation and wave-structure interaction problems with an acceptable accuracy with RMSE values remaining below the smoothing length h.

Original languageEnglish (US)
JournalProceedings of the Coastal Engineering Conference
Issue number2018
StatePublished - 2018
Event36th International Conference on Coastal Engineering, ICCE 2018 - Baltimore, United States
Duration: Jul 30 2018Aug 3 2018

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography


  • Coupling
  • Open Boundaries
  • Smoothed Particle Hydrodynamics


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