RT journal article
T1 Waves and wrecks: A computational fluid dynamic study in an underwater archaeological site
A1 Fernández Momblant, Tomás
A1 Izquierdo González, Alfredo
A1 Quinn, Rory
A1 Bethencourt Núñez, Manuel
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Ciencias de la Tierra
A2 Física Aplicada
K1 Computational fluid dynamics
K1 Multi-beam echo-sounder
K1 Shipwreck
K1 Site formation processes
K1 Hydrodynamics
K1 Scouring
AB The modification of waves by shipwrecks and the resulting scour play important roles in shipwreck site formation, and conservation of archaeological sites. The oscillatory flow induced by waves and its interaction with the hull structure at a historic shipwreck site was analyzed using a two phase 2D model based on the Reynolds averaged Navier-Stokes equations and shear stress transport (SST) k-Omega turbulence model, with inputs from field-based bathymetric survey. The relative importance and seasonal variation in hydrodynamic processes were investigated (flow velocity increase, coherent structures and vortex shedding, turbulence and steady current induced by the non linearity of waves). Results demonstrate that frictional velocity and flow increase dominate morphological change in the low wave energy period (LEP), whereas turbulent shear stress and large coherent structures dominate scouring in the high wave energy period (HEP). Furthermore, flow acceleration around the hull structure and recirculation cells originated by wave non-linearities become more prominent in the HEP, modifying the trajectory of the shedding vortex and increasing its capacity to transport sediment. The results demonstrate, for the first time, that computational fluid dynamics is a valuable tool in assessing the wave structure interaction in full scale and realistic morphological conditions at complex shipwreck sites.
PB ELSEVIER
SN 0029-8018
YR 2018
FD 2018
LK http://hdl.handle.net/10498/34392
UL http://hdl.handle.net/10498/34392
LA eng
NO Spanish Ministry of Economy and Competitiveness
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-may-2026