Coupling SPH with a 1-D Boussinesq-type wave model

Christophe Kassiotis (1) , Martin Ferrand (2) , Damien Violeau (1) , Benedict D. Rogers (3) , Peter K. Stansby (3) , Michel Benoit (1)

1 Saint-Venant - Laboratoire d'Hydraulique Saint-Venant / Saint-Venant Laboratory for Hydraulics
2 EDF R&D MFEE - Mécanique des Fluides, Energies et Environnement
3 MACE - School of Mechanical Aerospace and Civil Engineering [Manchester]

The high computational cost of SPH remains problematic in dealing with wave propagation, especially when the domains considered are large. In order to overcome this difficulty, we propose to couple 2-D SPH with a 1-D Finite Difference Boussinesq-type model. The latter deals with wave propagations for most of the spatial domain, whereas SPH computations focus on the shoreline or close to off-shore structures, where a complex description of the free-surface is required. The re-use of existing codes is achieved using a generic implementation based on Component Technology. The communication between software is ensured by the middleware Component Template Library (CTL). In order to deal with open domains, open-boundaries have to be implemented for SPH, with water height and velocity varying in space and time. These velocity and water height values are then driven by the Boussinesq-type model. As an illustration of the one way coupling, we present herein two simple examples of water waves, the first one with a flat bottom, the other one representing a schematic coastal protection.

Mots clés: Coupling; SPH; Boussinesq wave model

Domaines: Sciences de l'ingénieur [physics]; Mécanique [physics.med-ph]; Mécanique des fluides [physics.class-ph]; Physique [physics]; Mécanique [physics]; Mécanique des fluides [physics.class-ph]

Christophe Kassiotis, Martin Ferrand, Damien Violeau, Benedict D. Rogers, Peter K. Stansby, et al.. Coupling SPH with a 1-D Boussinesq-type wave model. 6th International SPHERIC Workshop, Jun 2011, Hamburg, Germany. pp.241--247. ⟨hal-00601352⟩