Eduardo González-Gorbeña

Eduardo González-Gorbeña
Danish Hydraulic Institute (DHI) · Energy and Ports - UK Solutions

Ph.D.

About

28
Publications
12,511
Reads
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204
Citations
Additional affiliations
October 2016 - July 2019
Universidade do Algarve
Position
  • PostDoc Position

Publications

Publications (28)
Article
A procedure for the optimisation of hydrokinetic turbine array layout through surrogate modelling is introduced. The method comprises design of experiments, computational fluid dynamics simulations, surrogate model construction, and constrained optimisation. Design of experiments are used to build polynomial and Radial Basis Function surrogates as...
Article
Full-text available
At the present time, the role of renewable energy in Brazil is significant as hydropower and other renewable energies, principally biomass, contribute 76.9 and 6.0 %, respectively, towards the total offer of electricity, as compared to the corresponding values of 15.8 and 2.8 % worldwide. Nevertheless, there is already an increasing role which is p...
Article
Full-text available
In Brasil, São Marcos Bay has a highly promising potential for the generation of electricity through the conversion of tidal current energy. This paper presents a methodology to study impacts of Hydrokinetic Energy Converter Farms (HECF) in coastal regions. Their location, power production and hydrodynamic, sedimentological and morphological proces...
Article
The objective of this study is the formulation and solution of the optimal green ship approach to a tidal port, from the economic and environmental points of view. The work presented is the first quantitative modeling approach for this problem. In the model presented in this paper , the total cost of ship fuel consumption in the approach of a ship...
Article
Full-text available
The energy that can be extracted from tidal currents is one of the most promising renewable energy sources due to its high density/predictability. Within this paper this energy source is evaluated economically respecting sustainability principles. This evaluation contrasts from previous studies due to the application of a cost-benefit analysis base...
Article
The Ria Formosa is a sheltered large coastal lagoon located on the Atlantic South Coast of Portugal, that has been classified as a natural park since 1987. The lagoon hosts a diverse and abundant fish community and other species of commercial importance. Several economical activities are supported by shipping, and as such, vessel traffic within the...
Preprint
This paper investigates the optimum tidal energy converter array density at a tidal inlet by applying surrogate-based optimisation. The SBO procedure comprises problem formulation, design of experiments, numerical simulations, surrogate model construction and constrained optimisation. This study presents an example for the Faro-Olhão Inlet in the R...
Preprint
The aim of this paper is to evaluate how lubricant selection affects gearbox efficiency and overall energy production by analysing real data from wind farms, monitored and controlled by a Supervisory Control and Data Acquisition (SCADA system). The turbines analysed worked with two or more oil types for the same amount of hours, which allowed to es...
Chapter
Full-text available
This paper presents a study for estimating the size of a tidal turbine array for the Faro-Olhão Inlet (Potugal) using a surrogate optimization approach. The method compromises problem formulation, hydro-morphodynamic modelling, surrogate construction and validation, and constraint optimization. A total of 26 surrogates were built using linear RBFs...
Article
A B S T R A C T - This paper investigates the optimum tidal energy converter array density at a tidal inlet by applying surrogate-based optimisation. The SBO procedure comprises problem formulation, design of experiments, numerical simulations , surrogate model construction and constrained optimisation. This study presents an example for the Faro-O...
Article
Full-text available
Electrical power cables in tidal turbine farms contribute a significant share to capital expenditure (CAPEX). As a result, the routing of electrical power cables connecting turbines to cable collector hubs must be designed so as to obtain the least cost configuration. This is referred to as a tidal cable routing problem. This problem possesses seve...
Conference Paper
Full-text available
This paper presents the results of a pilot experiment with an existing tidal energy converter (TEC), Evopod 1 kW floatable prototype, in a real test case scenario (Faro Channel, Ria Formosa, Portugal). Operational results related to the description of power generation capacity, energy capture area and proportion of energy flux are presented and dis...
Presentation
Full-text available
This presentation presents the results of a pilot experiment with an existing tidal energy converter (TEC), Evopod 1 kW floatable prototype, in a real test case scenario (Faro Channel, Ria Formosa, Portugal). Operational results related to the description of power generation capacity, energy capture area and proportion of energy flux are presented...
Article
Full-text available
This paper presents the results of a pilot experiment with an existing tidal energy converter (TEC), Evopod 1 kW floatable prototype, in a real test case scenario (Faro Channel, Ria Formosa, Portugal). A baseline marine geophysical, hydrodynamic and ecological study based on the experience collected on the test site is presented. The collected data...
Article
Full-text available
A study for the optimisation of in-stream tidal energy converter array layout for a three-dimensional fluid flow field is presented. The study involves design of experiments, computational fluid dynamics simulations, surrogate model construction, and constrained optimisation. Linear Radial Basis Functions (RBF) are used to build surrogate models as...
Conference Paper
Full-text available
This paper investigates the effects of Tidal Energy Converter (TEC) array size at a tidal channel on flood/ebb discharges at multi-inlet coastal lagoon by applying numerical modelling. The paper presents a case study for the Faro-Olhão inlet in the Ria Formosa (Portugal), a potential site for tidal in-stream energy extraction. Arrays of up to 11 ro...
Poster
Full-text available
This paper investigates the effects of Tidal Energy Converter (TEC) array size at a tidal channel on flood/ebb discharges at multi-inlet coastal lagoon by applying numerical modelling. The paper presents a case study for the Faro-Olhão inlet in the Ria Formosa (Portugal), a potential site for tidal instream energy extraction. Arrays of up to 11 row...
Article
The challenge for floating offshore wind structures is to reduce costs. The industry needs a wind turbine support solution that can be fabricated and deployed from existing shipyards and port facilities, while investors need accurate estimations and forecasts of wind resources and quantified information on the inherent variability in wind power gen...
Article
Full-text available
In the computational modeling of water environments there are cases where slender vertical structures, like bridge piers, are part of the modeling domain. In this work, four strategies for modeling the presence of bridge piers were studied: Mesh Refinement (MR), Nodal Island (NI), Additional Stress Term (AST) and Increasing Bottom Roughness (IBR)....
Article
Full-text available
In the computational modeling of water environments there are cases where slender vertical structures, like bridge piers, are part of the modeling domain. In this work, four strategies for modeling the presence of bridge piers were studied: Mesh Refinement (MR), Nodal Island (NI), Additional Stress Term (AST) and Increasing Bottom Roughness (IBR)....
Conference Paper
Full-text available
At the present time, the role of renewable energy in Brazil is significant as hydropower and other renewable energies, mainly biomass, contribute with 70.7% and 9,6%, respectively, towards the total offer for electric energy, as compared to the corresponding figures of 14,8% and 5,6% regarding worldwide averages. Nevertheless, there is already an i...
Poster
Full-text available
At the present time, the role of renewable energy in Brazil is significant as hydropower and other renewable energies, mainly biomass, contribute with 70.7% and 9,6%, respectively, towards the total offer for electric energy, as compared to the corresponding figures of 14,8% and 5,6% regarding worldwide averages. Nevertheless, there is already an i...
Article
Full-text available
In Brasil, São Marcos Bay has a highly promising potential for the generation of electricity through the conversion of tidal current energy. This paper presents a methodology to study impacts of Hydrokinetic Energy Converter Farms (HECF) in coastal regions. Their location, power production and hydrodynamic, sedimentological and morphological proces...
Article
Full-text available
A metamodel simulation based optimisation approach for the tidal turbine location problem is introduced. The method comprises design of experiments, computational simulations, metamodel construction and formulation of a mathematical optimisation model. Sample plans with different number of data points are used to fit 2nd and 3rd order polynomial as...
Thesis
Full-text available
At the present time, the role of renewable energy in the world is significant, the major such sources being hydropower and other renewable energies, mainly biomass whose contributions are 15,9% and 2,8%, respectively, towards the total offer for elec-tricity generation (MME, 2011). Nevertheless, there is already an increasing role which is played b...
Thesis
Full-text available
El desarrollo de este estudio se ha realizado como requisito obligatorio para la culminación del programa de Master Oficial en Ingeniería de Costas y Puertos, ofrecido por el Instituto de Hidraúlica de Cantabria. El tema escogido se ha realizado tanto, en base al reciente aumento del interés suscitado que rodea la denominada “ciencia del surf,” com...

Questions

Questions (3)
Question
Hi all,
I'm need to perform an extreme wave trough analysis. In order to do that, I'm using Toffoli's trough distribution .
Toffoli, A., Bitner-Gregersen, E., Onorato, M., & Babanin, A. V. (2008). Wave crest and trough distributions in a broad-banded directional wave field. Ocean Engineering, 35(17-18), 1784-1792.
Could you recommend more recent approaches than that proposed by Toffoli?
Thank you.
Best regards,
Eduardo
Question
Hi all,
I'm interested in modelling internal waves inside a fjord.
I would appreciate it if anyone can share recommendations on what will be the best modelling approach and modelling packages to attain this goal.
Thank you.
Best regards,
Eduardo
Question
Does anyone know how to plan a multi-level fractional factorial design of experiments?
I have 3 factors with 5 levels each, i.e.: 5³ = 125 experiments for a full factorial design, and I would like to reduce it to 45 experiments.
Matlab provides functions for multi-level full factorial and 2-level fractional factorial, but I don't know any function for multi-level fractional factorial designs...

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Cited By

Projects

Projects (3)
Project
MSCA-IF-EF-RI_GA#: 748747 OpTiCA project aims to provide a significant contribution towards the understanding of (a) the effects of Tidal Energy Converters (TECs) interactions with the environment; (b) the capabilities and limitations of common strategies used for the numerical modelling of TECs; and (c) how to mathematically formulate optimisation models to solve the TEC array layout problem considering technical, socio-economic and environmental constraints. From the methodology point of view, constraint optimisation models will be mathematically formulated considering ocean energy protocols, data collected from in-field measurements of prototypes tested in real environments and with surrogates built from validated numerical simulations. The outcomes of the project will contribute to improve common guidelines and standards for licensing tidal energy projects and de-risk financial investment
Project
Postdoctoral research at the Department of Ocean Engineering. Research title: Optimisation of hydrokinetic energy converter array layouts. The objective of the research is to formulate mathematical constraint optimisation models for the turbine layout problem using surrogates based on numerical simulations. The optimisation model aims to maximise return of investment considering geometric, economic and environmental constraints. Advisor: Prof. Paulo C.C. Rosman.
Project
Science currently has a very poor understanding of both the hydrodynamics and the ecology implications related with the extraction of energy on coastal environments. A major part of the lack of knowledge relates to the fact that deployments of tidal energy converters (TECs) are focused on deeper areas. In few cases that devices have been deployed closer to the coast, the data is highly commercially sensitive and thus not in the public domain to further wider understanding. Further, the measurements (when available) are often limited and do not provide the much needed information and context of the spatial and inter-annual variability inherent at such locations. The deployment of TECs has also been hindered by a lack of understanding of their environmental interactions, both in terms of the device impact on the environment (important for consenting and stakeholder bodies) and environmental impact on the device (fatigue, actual power output, etc.) which is vital to enhance investor confidence and increase financial support from the private sector. The access to freely available, transparently collected monitoring data from real deployments is paramount both for resource assessments and for cataloguing potential impacts of any marine renewable installation. This project proposal was designed to deliver real data and concrete results in relation to the test site, the technology, the environment, and the economic benefits of tidal energy extraction. The general objective of SCORE is to examine a small-scale tidal current turbine (Evopod E1) to be deployed in a shallow-water estuarine environment, looking at both the impacts of the turbine on its environment and the effects of the flow conditions on the turbine. More at: http://w3.ualg.pt/~ampacheco/Score/index.html