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

Document Type

Conference Proceeding

Publication Date

1-1-2018

Abstract

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.

Identifier

85074116045 (Scopus)

Publication Title

Proceedings of the Coastal Engineering Conference

ISSN

01613782

Issue

2018

Volume

36

Grant

141402

Fund Ref

Agentschap voor Innovatie door Wetenschap en Technologie

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