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SPH simulation of solitary wave interaction with a curtain-type breakwater
Shao, Songdong
Shao, Songdong
Publication Date
2005
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© 2005 International Association of Hydraulic Engineering and Research. Reproduced in accordance with the publisher's self-archiving policy.
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Additional title
Simulation par la méthode SPH de l'interaction d'une onde solitaire avec un brise-lames de type rideau
Abstract
An incompressible Smoothed Particle Hydrodynamics (SPH) method is put forward to simulate non-linear and dispersive solitary wave reflection and
transmission characteristics after interacting with a partially immersed curtain-type breakwater. The Naviers¿Stokes equations in Lagrangian form
are solved using a two-step split method. The method first integrates the velocity field in time without enforcing incompressibility. Then the resulting
deviation of particle density is projected into a divergence-free space to satisfy incompressibility by solving a pressure Poisson equation. Basic SPH
formulations are employed for the discretization of relevant gradient and divergence operators in the governing equations. The curtainwall and horizontal
bottom are also numerically treated by fixed wall particles and the free surface of wave is tracked by particles with a lower density as compared with
inner particles. The proposed SPH model is first verified by the test of a solitary wave with different amplitudes running against a vertical wall without
opening underneath. Then it is applied to simulate solitary wave interacting with a partially immersed curtain wall with different immersion depths. The
characteristics ofwave reflection, transmission, dissipation and impacting forces on the curtain breakwater are discussed based on computational results
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Citation
Shao, Songdong (2005). SPH simulation of solitary wave interaction with a curtain-type breakwater. Journal of Hydraulic Research. Vol. 43 No. 4, 366-375.
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