In the present study hydrodynamic interaction of regular and irregular waves with floating breakwaters (FBs) in shallow intermediate waters is examined experimentally a large-scale facility. The experiments were conducted CIEM flume Catalonia University Technology, Barcelona. influence incident wave characteristics certain geometric characteristics, such as width draught structure, on its efficiency examined. Four different FBs configurations are examined: (a) single fixed FB, (b) heave...

The aim of this study is to evaluate the applicability and suitability Smoothed Particle Hydrodynamics (SPH) method in modelling a flexible flat net currents. SPH meshless Lagrangian that discretises system into particles, making it particularly suitable for turbulent highly nonlinear flows with presence free surface. For net, methodology proposed uses fluid-driven elements (spheres) dynamic links discretise geometry within framework. This numerical approach allows determination deformation...

The Pont del Petroli is a dismissed pier in the area of Badalona, Spain, with high historical and social value. This structure was heavily damaged January 2020 during storm Gloria that hit southeastern Spain remarkable strength. reconstruction requires assessment characterization wave loading determined structural failure. Therefore, state-of-the-art Computational Fluid Dynamic (CFD) code employed herein as an aid for planned experimental campaign will be carried out at Maritime Engineering...

In this work the Weakly Compressible SPH-based (WCSPH) model DualSPHysics has been validated and applied to study random wave overtopping of dike-promenade layout in shallow water conditions. Data from physical tests carried out a small-scale flume have used for validation. The results compared terms surface elevation, mean discharges individual volumes distribution. selected geometrical is representative coastal area Premià de Mar, Catalonia (Spain). This stretch coast presents both...

Significant research efforts are now being directed at floating offshore wind turbines. The main challenge posed by turbines is the high construction and installation costs of substructure, which make it too expensive for commercial exploitation in current energy market. With aim achieving a cost-effective platform turbines, new concept monolithic spar buoy hereby presented. concrete structure includes both tower floater, built as continuous single piece. This offers significant cost...

Field data of a harbour basin are compared with analytical formulations for predicting maximum scouring depth due to propeller jets. Spatial analysis seven-year biannual bathymetries quantifies the evolution hole along sedimentation process within basin. The is found be order diameter rate first six months docking manoeuvring. Three analysed expressions yielded realistic results while observed discrepancies between theoretical predictions and field related scaling factors. outcomes this can...

In January 2020, the footbridge connecting seaward platform of Pont del Petroli pier to Badalona beach collapsed due severe sea storm named Gloria. Approximately 15 m fell into as a result prolonged wave action and strong impacts. To understand complex interaction between waves structures that led pier’s collapse during storm, composite modelling approach was developed. The loads on each element were initially evaluated using meshless DualSPHysics code, which employs Smoothed Particle...

This research examines the overtopping volumes associated with focused wave groups on smooth dikes an emerged toe. Focused are employed to represent highest waves of random sea states in a compact form, obviating need model entire irregular train. The study investigates how affected by focus location and phase. Results from 418 experimental tests have been gathered analyzed. experiments first-order generation theory analyse structural response. Subsequent studies will address errors induced...

Design criteria for coastal defenses exposed to wave overtopping are usually assessed by mean discharges and maximum individual volumes. However, it is often difficult give clear precise limits of tolerable all kinds layouts. A few studies analyzed the relationship between flows hazard levels people on sea dikes, confirming that one single value admissible discharge or volume not a sufficient indicator hazard, but detailed characterization flow velocities depths required. This work presents...

One of the main aspects when testing floating offshore platforms is scaled mooring system, particularly with increased depths where such are intended. The paper proposes use truncated systems to emulate real system by solving an optimization problem. This approach could be interesting option existing facilities do not have enough available space. As part development a new spar platform made concrete for Floating Offshore Wind Turbines (FOWTs), called Windcrete, station keeping catenary...

Twin propellers without a rudder were studied using physical model with fixed clearance distance and three different rotating velocities. Experimental results compared from theoretical expressions developed over the past 50 years for efflux velocity, axial maximum bed velocity. It was found that velocity equations overestimated experimental results, whereas computed velocities matched data reasonably well. However, when only one method to behave better; overestimation resulted if quadratic...

The measurement of wave-induced impacts on structures involves significant scientific and engineering challenges. Regular nearly breaking pgbgand broken waves generated following cnoidal first-order Stokes wavemaker theory have been considered to study the variability wave vertical breakwaters. Four small-scale hydraulic experiments were carried out repeated 120 times using high-speed pressure force equipment. High in measured field total observed, reflecting random nature studied phenomena....

The present work employs the so-called Evolutionary Polynomial Regression (EPR) algorithm to build up a formula for assessment of mean wave overtopping discharge smooth sea dikes and vertical walls. EPR is data-mining tool that combines integrates numerical regression genetic programming. This technique here employed dig into relationship between main hydraulic structural parameters characterize problem under study. are chosen based on existing most used semi-empirical formulas assessment....

Aquaculture in high-energy areas poses significant challenges to traditional engineering tools, as the strong non-linear loads exerted on structures often require more refined numerical models. In this work, we carry out modelling of an aquaculture net made copper alloy interacting with current, employing a Computational Fluid Dynamic (CFD) method. The approach used work allows for simulation direct interaction between and fluid, without need use hydrodynamic coefficients model net, unlike...