Publication details.

Paper

Year:2018
Author(s):A. Cáceres-Euse, F. Toro-Botero, A. Orfila, A. Osorio
Title:Vortex formation in wave-submerged structure interaction
Journal:OCEAN ENGINEERING
ISSN:0029-8018
Volume:166
Pages:47-63
D.O.I.:10.1016/j.oceaneng.2018.07.057
Web:https://dx.doi.org/10.1016/j.oceaneng.2018.07.057
Abstract:© 2018 Elsevier Ltd Long wave-structure interaction is studied numerically. The Rayleigh and Goring wave generation theories with a solitary wave with two nonlinearity factors and three discretization schemes for the advective terms for the wave propagation are evaluated. Results show good agreement for the main wave peak and for the wave decay rate. The model captures the trailing waves and some differences on the wave decay rates are observed. Majorcatic and solitary wave cases passing over submerged structure is then studied. For the monochromatic scenario, the model agrees very well with the free surface experimental data, and a ”Linear fluid structure interaction mechanism” can be observed based on the structure geometry and the absence of adverse pressure gradient in the flow. For the solitary wave case interacting with a slender column, the numerical model agrees very well with the measurements, showing that an adverse pressure gradient in the flow is presented and the vortex in the flow induces a wave breaking process, not by the bottom friction, nor by water depth reduction but by a strong transport of mass from upstream to downstream side of the vortex; this turbulent structure is the dominant process, even when the wave breaking is present.

Related staff

  • Alejandro Orfila Förster
  • Related departments

  • Oceanography and Global Change
  • Related research groups

  • Marine Technologies, Operational and Coastal Oceanography