1st Edition

Progress in Renewable Energies Offshore Proceedings of the 2nd International Conference on Renewable Energies Offshore (RENEW2016), Lisbon, Portugal, 24-26 October 2016

Edited By C. Guedes Soares Copyright 2016

    Progress in Renewable Energies Offshore includes the papers presented in the 2nd International Conference on Renewable Energies Offshore (RENEW2016, Lisbon, Portugal, 24-26 October 2016).

     The scope of the book is broad, covering all aspects of renewable energies offshore activities such as resource assessment; wind energy; wave energy; tidal energy; ocean energy devices; multiuse platforms; PTO design; grid connection; economic assessment; installation and maintenance planning. The contents of the present book are organized in these main subject areas corresponding to the sessions in the Conference.
    The conference reflects the importance of the renewable energies offshore worldwide and is an opportunity to contribute to the exchange of information on the developments and experience obtained in concept development, design and operation of these devices.
    Progress in Renewable Energies Offshore has as main target academics and professionals working in the related areas of renewable energies.

    Resource assessment – waves

    A hindcast study on wave energy variability and trends in Le Croisic, France
    M. Gonçalves, P. Martinho & C. Guedes Soares

    On the peak period distributions conditioned on significant wave heights in Aguçadoura, Portugal
    G. Muraleedharan, C. Lucas, D. Martins & C. Guedes Soares

    Assessing the wave energy potential in the Mediterranean Sea using WAVEWATCH III
    D. Pelli, L. Cappietti & H. Oumeraci

    Assessing the utility and effectiveness of the IEC standards for wave energy resource characterisation
    V. Ramos, R. Carballo & J.V. Ringwood

    Wave energy potential assessment along the west coast of Fuerteventura
    G. Rodriguez, G. Clarindo & C. Guedes Soares

    Wave energy resource assessment from a 12-year hindcast, for Pembrokshire, Wales
    A.R. Bento, P. Martinho & C. Guedes Soares

    Trends in the available wave power at the Portuguese pilot zone
    D. Silva, P. Martinho & C. Guedes Soares

    Development of a numerical modelling tool for combined near field and far field wave transformations using a coupling of potential flow solvers
    T. Verbrugghe, P. Troch, A. Kortenhaus, V. Stratigaki & A.P. Engsig-Karup

    Resource assessment – tidal

    Evaluation of the Aguçadoura pilot area as an ocean current turbine site with ROMS modeled ocean current data
    T.C. Costa, L.T. Pereira, M. Marta-Almeida & C. Guedes Soares

    Assessing the importance of including waves in simulations of tidal stream turbine impacts
    I. Fairley & H. Karunarathna

    Exploring the utility and effectiveness of tidal stream energy resource assessment and characterisation standards: A case study
    V. Ramos, R. Carballo & J.V. Ringwood

    Tidal energy resource characterisation in the Dover Strait by using VHF radar and ADCP measurements
    M. Thiébaut & A. Sentchev

    Resource assessment – wind

    Assessing climate change effect in offshore wind power in the North of Portugal
    M. Bernardino & C. Guedes Soares

    Regional frequency analysis of wind speed on the coast of Portugal
    R.M. Campos & C. Guedes Soares

    A methodology for the power performance assessment of floating offshore wind turbines
    A. Couto, P.A.P. Justino, J. Silva & A. Estanqueiro

    Application of reanalysis data for offshore wind power potential assessment off the west coast of India
    G. Nagababu, N.K. Naidu, S.S. Kachhwaha & V. Savsani

    Environmental monitoring

    Development of an autonomous offshore monitoring system
    D.B.S. Lopes & H. Sarmento

    Evaluation of offshore wind power potential of India by combining satellite and moored buoy data
    N.K. Naidu, G. Nagababu, S.S. Kachhwaha & V. Savsani

    High resolution monitoring for marine renewable energy
    L. Ren & M. Hartnett

    Additional attenuation detection and correction of radar wave within the interior region of offshore wind farm
    L. Xie, S.W. Wang, X.P. Yan, F. Ma & S. Haugen

    Wave energy devices

    Energy capture optimization for an adaptive wave energy converter
    J.J. Barradas-Berglind, H. Meijer, M. van Rooij, S. Clemente-Pi˜nol, B. Galván-García, W.A. Prins, A.I. Vakis & B. Jayawardhana

    Biomimetic marine energy devices in waves and sheared currents
    K.A. Belibassakis, E.S. Filippas & Th.P. Gerostathis

    Systems engineering applied to the development of a wave energy farm
    D. Bull, J. Roberts, R. Malins, A. Babarit, J. Weber, K. Dykes, R. Costello, B. Kennedy, K. Neilson & C. Bittencourt

    Numerical simulation of a single Floating Point Absorber Wave Energy Converter using OpenFOAM®
    B. Devolder, P. Rauwoens & P. Troch

    Revenue optimization for the Ocean Grazer wave energy converter through storage utilization
    H.T. Dijkstra, J.J. Barradas-Berglind, H. Meijer, M. van Rooij, W.A. Prins, A.I. Vakis & B. Jayawardhana

    Numerical and experimental studies of water impact on conical point absorber buoys
    H. Li, H.-Z. He, S.-H. Yang, J. Zhang, J. Liang & W. Sheng

    Study of the influence of design parameters on the structural behavior of a point absorber wave energy converter using a finite element approach
    C. Malça, R. Felismina & P. Beirão

    Design optimization of a multifunctional wave energy device
    G. Palma, S.M. Formentin, B. Zanuttigh, P. Contestabile & D. Vicinanza

    Wave energy generation with thermo-chemical storage: Getting a uniform injection into the grid
    M.C. Rodríguez-Hidalgo, A. Lópéz, A. de Bonis, P.A. Rodríguez-Aumente & A. Lecuona

    Wave Dragon—‘Coldward and Stormward’
    I. Russell, E. Friis-Madsen & H.-C. Soerensen

    Wave energy converters: Fix- or self-referenced?
    W. Sheng & T. Lewis

    Modelling of the 3-float WEC M4 with nonlinear PTO options and longer bow beam
    P.K. Stansby, E. Carpintero Moreno & T. Stallard

    Performance of the three-float wave energy converter M4 in regular and random waves
    L. Sun, J. Zang, P.K. Stansby & E. Carpintero Moreno

    The modelling of a flap type wave energy converter in a time-dependent mild-slope equation model
    N. Tomey-Bozo, J. Murphy, T. Lewis, P. Troch, A. Babarit & G. Thomas

    Hydrodynamic analysis and optimization of a wave activated device
    S. Xu, J.M. Rodrigues & C. Guedes Soares

    Wave energy devices – OWC

    Performance of oscillating water column wave energy converters integrated in breakwaters
    V. Anvesh, D. Karmakar & C. Guedes Soares

    The first worldwide application at full-scale of the REWEC3 device in the Port of Civitavecchia: Initial energetic performances
    F. Arena, A. Romolo, G. Malara, V. Fiamma & V. Laface

    Parametric study of blade shape to enhance performance of a turbine used in OWC
    K. Ezhilsabareesh & A. Samad

    Turbine choice and optimization for a shoreline OWC wave energy plant
    A.F.O. Falcão, J.C.C. Henriques & L.M.C. Gato

    A CFD analysis of the wave field in front of a U-OWC breakwater
    P. Filianoti & L. Gurnari

    Mathematical modeling of a non-axisymmetric floating OWC
    P.A.P. Justino

    Site-specific optimization of an OWC wave energy converter in a Mediterranean area
    I. Simonetti, I. Crema, L. Cappietti, H. El Safti & H. Oumeraci

    Integration of breakthrough concepts into the OWC spar buoy
    B. Teillant, Y. Debruyne, A. Sarmento, R. Gomes, L.M.C. Gato, M. Fontana, M. Philippe & A. Combourieu

    Wave energy devices – arrays

    A 3D-BEM coupled-mode method for WEC arrays in variable bathymetry
    K.A. Belibassakis, Th.P. Gerostathis & G.A. Athanassoulis

    Time domain analysis of array interaction and different heading angles for wave energy converter arrays
    F. Kara

    A critical discussion about optimisation approaches for ocean energy array design
    V. Nava, M.B.R. Topper, P. Ruiz-Minguela, A. de Andrés & H. Jeffrey

    Influence of a parabolic reflector wall on the sea state in an array of point absorber wave energy converters
    R.J. van der Wiel, J. Kramer, P.P.D. van der Ven, M.J.A. Borsboom & M.P.C. de Jong

    Wave energy devices – control

    Control and instrumentation topologies for an integrated wave energy array
    C.J. Kenny, D. Findlay, I. Lazakis, J. Shek & P.R. Thies

    Improving seabed cable plough performance for offshore renewable energy
    S. Robinson, M.J. Brown, A.J. Brennan, M. Cortis, C.E. Augarde & W.M. Coombs

    Tuning a linear quadratic regulator for point absorber wave energy converters
    D. Valério, P. Beirão, G. Vissio, G. Bracco & G. Mattiazzo

    ISWEC control tuning: Lessons learned
    G. Vissio, G. Bracco, E. Giorcelli, G. Mattiazzo, D. Valério & P. Beirão

    Wave energy devices – PTO

    Optimization of an oil-hydraulic Power Take-Off system based on an adaptable mechanism interface
    M. Calvário, J.F. Gaspar, A. Sinha & C. Guedes Soares

    Best practices for the use of electrical test infrastructures to validate control strategies: A case study in wave energy conversion
    F.X. Faÿ, E. Robles, J.C.H. Henriques & M. Marcos

    Practical performances of MPC for wave energy converters
    F. Ferri, A. Tetu & J. Hals

    Concept of reciprocating oil-hydraulic cylinders for increased wave power harvesting
    J.F. Gaspar, A. Sinha, M. Calvário & C. Guedes Soares

    Ocean energy devices

    Performance assessment for high temperature OTEC plant
    H.S. Lee, S.T. Lim, J.H. Moon & H.J. Kim

    The performance comparison of the OTEC cycles with an ejector
    J.H. Moon, H.S. Lee, H.J. Kim & J.I. Yoon

    Conceptual design of a floating plant of fresh water production by using the ocean thermal energy as power source
    L.R. Núñez Rivas, J.A. Somolinos Sanchez, L. Blay Muñoz & M.P. Portilla

    Analytical and numerical investigation of a sea water desalination plant with integration of renewable marine energy (Jorf Lasfar OCP Morocco)
    D. Saifaoui, M. Rouway, M. Nachtane & M. Tarfaoui

    Tidal energy devices

    Operation modelling of tidal energy lagoon proposals within the Bristol channel and Severn Estuary
    A. Angeloudis & R.A. Falconer

    Assessing the performance of tidal turbines arrays using an analytical method: Application to the Alderney Race (France)
    O.A. Lo Brutto, J. Thiébot, S.S. Guillou, H. Gualous & V.T. Nguyen

    Load alleviation technology for extending life in tidal turbines
    A.M. Young, J.R. Farman & R.J. Miller

    Experimental investigation of the turbulent flow behind a horizontal axis tidal current turbine
    C. Del Frate, F. Di Felice, F. Alves Pereira, G.P. Romano, D. Dhomé & J.C. Allo

    Design and operation of a 1MW four turbine tidal fence
    F. Heathcote, C.R. Vogel & R.H.J. Willden

    Parametric analysis of a tidal current turbine using CFD techniques
    T. Karthikeyan, K. Ezhilsabareesh, A. Samad, N. Venkatesan & E.J. Avital

    Predictions of the dynamic performance of horizontal axis marine current turbines under the effect of different impact scenarios
    M. Nachtane, M. Tarfaoui, A. El Moumen, M. Ait Mohamed & D. Saifaoui

    PD control with buoyancy compensation for automatic emersion maneuvers of first generation TEC
    J.A. Somolinos Sanchez, M.P. Portilla, M. Espín, L.R. Núñez Rivas, A. Lópéz & E. Segura

    Assessing the turbulence in a tidal estuary and the effect of turbulence on marine current turbine performance
    M. Thiébaut, A. Sentchev, F.G. Schmitt & T. Le Kien

    Numerical modeling with porous media for current field around HAMT array
    Y. Watanabe, T. Ikoma, K. Masuda & H. Eto

    Computational analysis of blockage designed tidal turbine rotors
    A. Wimshurst & R.H.J. Willden

    Wind energy devices

    Pre-Design of a TLP steel-concrete composite substructure for a 6 MW wind turbine as a way to essential cost-reduction
    F. Adam, U. Ritschel, E. Plumridge & J. Großmann

    Open-sea 1:30 scale tests on a spar-type offshore wind turbine in parked conditions: Progress and future work
    C. Ruzzo, V. Fiamma, G. Failla, F. Arena, M. Collu & V. Nava

    Aero-elastic analysis and classical flutter of a multi-megawatt slender bladed horizontal-axis wind turbine
    M.A. Sayed, T. Lutz, E. Krämer & F. Borisade

    Supervisory system for the automation of model building and simulations with the wind turbine code FAST
    E. Uzunoglu & C. Guedes Soares

    Performance of barge-type floaters for floating wind turbine
    K.G. Vijay, D. Karmakar, E. Uzunoglu & C. Guedes Soares

    Design and automation of a pile test facility for offshore foundations and first experimental results
    E. Weichhold, F. Dahlhaus, F. Adam, T. Meier & J. Großmann

    Modular jacket offshore wind turbine support structure for the Northern Portuguese coastal zone
    B. Yeter, Y. Garbatov & C. Guedes Soares

    Multiuse solutions

    Experimental and numerical design of a combined wind-wave concept
    A. Iturrioz, J. Sarmiento, V. Ayllón, J.A. Armesto, A. Jurado, R. Guanche, C. Vidal & I.J. Losada

    Energy yield for co-located offshore wind and tidal stream turbines
    D.R. Lande-Sudall, T. Stallard & P.K. Stansby

    Design of a TLP floating structure concept for combined wind and wave energy exploitation
    T.P. Mazarakos, D.N. Konispoliatis & S.A. Mavrakos

    Mooring systems

    Mooring cable simulations with snap load capturing for wave energy applications
    J. Palm, C. Eskilsson & L. Bergdahl

    Experimental testing of moorings for large floating wave energy converters
    J.B. Thomsen, F. Ferri & J.P. Kofoed

    The influence of biofouling on power capture and the fatigue life of mooring lines and power cables used in wave energy converters
    S.-H. Yang, J.W. Ringsberg & E. Johnson

    The dynamic effects of marine growth on a tension moored floating wind turbine
    C. Wright, J. Murphy & V. Pakrashi

    Risk and reliability

    Evaluating a novel approach to reliability decision support for offshore wind turbine installation
    T. Gintautas & J.D. Sørensen

    Fault tree analysis of the failure of floating offshore wind turbines support structures and blade systems
    J.C. Kang, L.P. Sun & C. Guedes Soares

    Reliability assessment of tidal stream energy: Significance for large-scale deployment in the UK
    F. Khalid, P.R. Thies & L. Johanning

    Uncertainty management in risk assessment of offshore energy structures
    U. Okoro & A. Kolios

    Uncertainty associated with the estimation of drag and inertia coefficients of fixed vertical cylinders
    K. Raed, E. Uzunoglu & C. Guedes Soares

    A novel reliability-based simulation tool for offshore renewable technologies
    G. Rinaldi, L. Johanning, P.R. Thies & R.T. Walker

    On the model uncertainty of wave induced responses of a floating semisubmersible wind system
    E. Uzunoglu & C. Guedes Soares

    Maintenance planning

    Operations and maintenance planning for community-scale, off-grid wave energy devices
    A. Gray, D. Findlay & L. Johanning

    Towards improved forecasting for offshore wind turbine O&M transfers
    P.R. Mills, B. Stephen, D. McMillan & I. Lazakis

    Development of innovative coatings for marine renewable energy
    A. Rodríguez, B. Santos, V. González de Lena, A. Yedra & C. Manteca

    Modelling the propagation of underwater acoustic emissions for condition monitoring of marine renewable energy
    J. Walsh, I. Bashir, P.R. Thies, L. Johanning & Ph. Blondel

    Economic assessments

    Enhancing marine energy competitiveness: Economic assessment of a co-located wave-wind energy farm
    S. Astariz & G. Iglesias

    Economic feasibility of floating offshore wave farms in Galicia, Spain
    L. Castro-Santos & C. Guedes Soares

    Preliminary cost assessment of an offshore floating wind farm installation on the Galician coast
    H. Díaz, J.M. Rodrigues & C. Guedes Soares

    The economic potential value of offshore wind near Berlengas
    A. Faria Lopes

    Mapping economic performance of wave energy
    C. Frost, D. Findlay, L. Johanning, E. Macpherson & P. Sayer

    The potential offshore energy cluster in Portugal
    A. Pego, M. Marques, R. Salvador, C. Guedes Soares & A. Monteiro

    Evaluation of the expected power output of wave energy converters in the north of the Portuguese nearshore
    D. Silva, E. Rusu & C. Guedes Soares

    Capital costs in tidal stream energy projects: A site-specific approach
    A. Vazquez & G. Iglesias


    Carlos Guedes Soares is a professor of Naval Architecture and Marine Engineering at Instituto Superior Técnico, University of Lisbon, Portugal. He received the MSc and Ocean Engineer degrees from the Massachusetts Institute of Technology, Cambridge, in 1976, the PhD degree from the Norwegian Institute of Science and Technology, Trondheim, Norway, in 1984, and the Doctor of Science degree from the Technical University of Lisbon, Lisbon, Portugal, in 1991.
    Carlos is the President of the Centre for Marine Technology and Engineering (CENTEC), which is a research centre of the Instituto Superior Técnico that is recognized and funded by the Portuguese Foundation for Science and Technology. He has coauthored more than 400 journal papers and 600 conference papers and has been involved in more than 60 international research projects and 20 national projects.