C. Guedes Soares

Multi-objective optimisation for hybrid electric system setup in a remote island

Sara Ramos-Marin, C. Guedes Soares

Abstract This paper assesses the optimum configuration of a hybrid electric system, incorporating different forms of marine renewable energy. The efficiency of three multi-objective optimisation approaches—Multi-objective Pareto Search, Multi-Objective Genetic Algorithm (MOGA) and a hybrid MOGA is assessed and compared when utilised …

Review of Wave Energy Resource Characterisation, Metrics, and Global Assessments

Sara Ramos-Marin, C. Guedes Soares

pt (code pays fourni par la source)

Parametric study of embedded mooring tensions with a coupled Eulerian–Lagrangian approach

Wenzhe Zhang, Sheng Xu, C. Guedes Soares

This study explores the complex interactions between chains and seabed soil as they affect the global behaviour of mooring systems. The coupled Eulerian-Lagrangian method is adopted for large deformation finite element analysis. The mooring chain is modelled as discrete cylindrical rigid body …

Modeling sea waves accounting for serial correlations and seasonal effects for the Aguçadoura offshore site test

Guilherme Clarindo, C. Guedes Soares, Erik Vanem

This article presents an approach for simulating time-series of significant wave height and wave period. The novelty of the method for simulating data lies in preserving the marginal distribution as well as the autocorrelation structure of the original observed data. Thus, the …

Assessments of multiple metocean forecasts in the North Atlantic Ocean

Andressa D’Agostini, Ricardo M. Campos, C. Guedes Soares

Accurate wind and wave forecasts are crucial for a variety of marine operations, including ship design, navigation safety, and engineering. This study evaluates the predictability of wind and wave conditions in the North Atlantic Ocean using both deterministic and ensemble forecast models. …

pt, us (code pays fourni par la source)

Improving the accuracy of significant wave height hindcast data with long short-term memory models

Marcos Latas, Ahmad Ali, Dina Silva, C. Guedes Soares

To determine the capabilities of long short-term memory (LSTM) neural networks to extend the skill of wave forecasts, the ERA5 hindcast database is used as a test case. Data from a buoy located in the North Atlantic Ocean near Portugal continental coast …

Numerical study on the application of gravity cages on the coast of Algarve

Zhongchi Liu, Sara Ramos-Marin, C. Guedes Soares

A numerical model is built to study the performance of gravity cages on the coast of Algarve. A review is made of the situation in Portugal concerning offshore aquaculture and the areas in Algarve that are planned for this activity are identified. …

Overview of the wave energy resources in European regional seas

Sara Ramos-Marin, C. Guedes Soares

An overview is provided of the different approaches used for the wave energy characterization, and of the existing wave energy resource levels along the European continental coasts. Studies are classified by basins, regional seas, and countries. Most energetic areas all over Europe …

Numerical study on seakeeping behavior of unmanned sailing boats under extreme wave conditions

J.J. Wang, H.T. Wang, Gang Yu Xiang, Xianbo Xiang et autres

The seakeeping performance of unmanned sailboat directly affects its motion response characteristics. In this study, a series of CFD simulation experiments were designed and carried out to simulate the motion response of unmanned sailing boats under different wave conditions. In the simulation …

Numerical study on the mooring force of a gravity-type fish cage under currents and waves

Z.C. Liu, C. Guedes Soares

A numerical model of an entire fish cage under currents and waves is built using the finite element method. All the components in a fish cage are slender structures, thus, the hydrodynamic load is modelled by the Morison equation. The collar and …

Trends in Maritime Technology and Engineering Volume 2

C. Guedes Soares, T.A. Santos

Floating Offshore Wind Turbines (FOWT), due to their geographical location are subjected to strong dynamic loadings originated from external sources such as wind and waves. Consequently, these systems are highly sensitive to a specific range of operational frequencies. If a dynamical system …

Representing spectral changes in seasonal ocean wave patterns using interquartile ranges

G. Clarindo, C. Guedes Soares, G. Rodríguez

This article presents the changes observed in the structure of wind-wave spectra due to wave period variability. A large set of wave data is analysed as well as a robust spectral representation of the sea states is applied for this purpose. After …