Interaction between wave and coastal structure: validation of two lagrangian numerical models with experimental results marine 2011

E. Didier, Rui Martins, M. G. Neves, J. R. G. Vasco

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Numerical modeling of the interaction among waves and coastal structures is a challenge due to the many nonlinear phenomena involved, such as, wave propagation, wave transformation with water depth, interaction among incident and reflected waves, run-up / run-down and wave overtopping. Numerical models based on Lagrangian formulation, like SPH (Smoothed Particle Hydrodynamics), allow simulating complex free surface flows. The validation of these numerical models is essential, but comparing numerical results with experimental data is not an easy task. In the present paper, two SPH numerical models, SPHysics LNEC and SPH UNESP, are validated comparing the numerical results of waves interacting with a vertical breakwater, with data obtained in physical model tests made in one of the LNEC's flume. To achieve this validation, the experimental set-up is determined to be compatible with the Characteristics of the numerical models. Therefore, the flume dimensions are exactly the same for numerical and physical model and incident wave characteristics are identical, which allows determining the accuracy of the numerical models, particularly regarding two complex phenomena: wave-breaking and impact loads on the breakwater. It is shown that partial renormalization, i.e. renormalization applied only for particles near the structure, seems to be a promising compromise and an original method that allows simultaneously propagating waves, without diffusion, and modeling accurately the pressure field near the structure.

Original languageEnglish
Title of host publicationMARINE 2011 - Computational Methods in Marine Engineering IV
EditorsL. Eca, E. Onate, J. Garcia, T. Kvamsdal, P. Bergan
PublisherInternational Center for Numerical Methods in Engineering
Pages134-145
Number of pages12
ISBN (Print)9788489925793
Publication statusPublished - 1 Dec 2011
Event4th International Conference on Computational Methods in Marine Engineering, MARINE 2011 - Lisbon, Portugal
Duration: 28 Sep 201130 Sep 2011

Conference

Conference4th International Conference on Computational Methods in Marine Engineering, MARINE 2011
CountryPortugal
CityLisbon
Period28/09/1130/09/11

Keywords

  • Impact loads
  • Sph - Smoothed Particle Hydrodynamics
  • Vertical breakwater
  • Wave-structure interaction

Fingerprint

Dive into the research topics of 'Interaction between wave and coastal structure: validation of two lagrangian numerical models with experimental results marine 2011'. Together they form a unique fingerprint.

Cite this