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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: orcid bw Danilo Calcagni;
    Danilo Calcagni
    ORCID
    Derived by OpenAIRE algorithms or harvested from 3rd party repositories

    Danilo Calcagni in OpenAIRE
    orcid bw Francesco Salvatore;
    Francesco Salvatore
    ORCID
    Derived by OpenAIRE algorithms or harvested from 3rd party repositories

    Francesco Salvatore in OpenAIRE
    orcid bw Roberto Muscari;
    Roberto Muscari
    ORCID
    Derived by OpenAIRE algorithms or harvested from 3rd party repositories

    Roberto Muscari in OpenAIRE

    The present work deals with the assessment of variable fidelity simulation models to analyze the complex phenomenology of a turbine operating in a tidal stream. In the framework of an Unsteady Loading Tidal Turbine Benchmarking Study by Supergen ORE HUB [Tucker Harvey et al.(2021)], performances of an Horizontal Axis Tidal Turbine (HATT) are extensively analised. A general purpose finite volume solver based on the solution of the unsteady Navier-Stokes equations for multi-block structured grids is considered [Dubbioso et al.(2019), Gregori et al.(2020)]. The turbine has been simulated over a widerange of tip-speed ratios, by means of unsteady RANS simulations, in the frame of reference fixed to the rotating turbine, in uniform onset flow and calm water conditions. Since the work is also focused on the assessment of design-oriented hydrodynamics models, crossvalidation studies between URANS and BIEM (Boundary Integral Equation Model) results are presented. The wake-field by URANS is presented and analised with the aim to validate results by lower fidelity models. The wake-field has been processed and geometrical parameters of the trailing wake geometry were derived, allowing, in principle, the improvement of simplified wake models as those adopted by the BIEM.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao IRIS Cnrarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao IRIS Cnrarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: orcid Benoît Gaurier;
    Benoît Gaurier
    ORCID
    Harvested from ORCID Public Data File

    Benoît Gaurier in OpenAIRE
    orcid Stephanie Ordonez-Sanchez;
    Stephanie Ordonez-Sanchez
    ORCID
    Harvested from ORCID Public Data File

    Stephanie Ordonez-Sanchez in OpenAIRE
    Jean-Valéry Facq; orcid Grégory Germain;
    Grégory Germain
    ORCID
    Harvested from ORCID Public Data File

    Grégory Germain in OpenAIRE
    +7 Authors

    This Round Robin Test program aims to establish the influence of the combined wave and current effect on the power capture and performance of a generic tidal turbine prototype. Three facilities offering similar range of experimental conditions have been selected on the basis that their dimensions along with the rotor diameter of the turbine translate into low blockage ratio conditions. The performance of the turbine shows differences between the facilities up to 25% in terms of average power coefficient, depending on the wave and current cases. To prevent the flow velocity increasing these differences, the turbine performance coefficients have been systematically normalized using a time-average disc-integrated velocity, accounting for vertical gradients over the turbine swept area. Differences linked to blockage effects and turbulence characteristics between facilities are both responsible for 5 to 10% of the power coefficient gaps. The intrinsic differences between the tanks play a significant role as well. A first attempt is given to show how the wave-current interaction effects can be responsible for differences in the turbine performance. In these tanks, the simultaneous generation of wave and current is a key part often producing disruptions in both of these flow characteristics.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ COREarrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Journal of Marine Science and Engineering
    Article . 2020 . Peer-reviewed
    License: CC BY
    Data sources: Crossref
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    CNR ExploRA
    Article . 2020
    Data sources: CNR ExploRA
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Hal
    Article . 2020
    Data sources: Hal
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ COREarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      Journal of Marine Science and Engineering
      Article . 2020 . Peer-reviewed
      License: CC BY
      Data sources: Crossref
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      CNR ExploRA
      Article . 2020
      Data sources: CNR ExploRA
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Hal
      Article . 2020
      Data sources: Hal
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: orcid bw Francesco Salvatore;
    Francesco Salvatore
    ORCID
    Derived by OpenAIRE algorithms or harvested from 3rd party repositories

    Francesco Salvatore in OpenAIRE
    orcid bw Danilo Calcagni;
    Danilo Calcagni
    ORCID
    Derived by OpenAIRE algorithms or harvested from 3rd party repositories

    Danilo Calcagni in OpenAIRE
    Pedram Ghorbanpour; Matteo Gregori; +2 Authors

    The poster presents a computational platform for the analysis and design of hydrokinetic turbine for the exploitation of the renewable energy in marine and river currents. Digital tools are integrated into a computational suite including: (1) turbine geometry 3D modeller and automated mesh generation, (2) variable-fidelity computaitonal hydrodynamics models, (3) turbine hydrodynamic design and prediction of energy output in a real marine or river site. The tools have been in-house developed from a two-decade experience in the marine propulsion sector, and have been extensively validated for applications to marine propulsion and renewable energy systems. A distinguishing feature of the computational suite platform is the ongoing activity aimed at creating an open access to the platform tools by means of an online platform, named "OceanusLink".

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao IRIS Cnrarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao IRIS Cnrarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Sarichloo Z.; Ghorbanpour P.; orcid Salvatore F.;
    Salvatore F.
    ORCID
    Harvested from ORCID Public Data File

    Salvatore F. in OpenAIRE

    A computational procedure for the hydrodynamicanalysis and design of horizontal-axis tidal turbinesis presented and numerical applications are discussed. Themethodology combines an original design algorithm and aturbine hydrodynamics model valid for arbitrary 3D flows.Different from standard design methods based on bladeelement models, 3D-flow corrections are not necessary.Blade geometry parameters are determined with the objectiveto maximize power at given design Tip Speed Ratio(TSR), whereas a constraint is introduced in order to limitturbine thrust at TSR higher than the design condition.Numerical applications include the design of a laboratoryscaleturbine and a full-scale turbine for the exploitationof tidal streams in the Messina strait. Alternative designsolutions obtained by varying the design TSR are comparedin terms of energy output as well as mechanical loadstransferred to the powertrain.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ IRIS Cnrarrow_drop_down
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    International Marine Energy Journal
    Article . 2022 . Peer-reviewed
    License: CC BY
    Data sources: Crossref
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      International Marine Energy Journal
      Article . 2022 . Peer-reviewed
      License: CC BY
      Data sources: Crossref
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Cronin Patrick; Courade Clement; Dillon Conor; Knoblauch Harry; +3 Authors

    The results of demonstration tests of a full-scale hydrokinetic turbine for river and tidal sites, are presented at the conclusion of the EU-funded CRIMSON project. The turbine features a 3-bladed crossflow, 9.0 m2 capture area rotor, representing one module of the ORPC RivGen© technology. A comprehensive matrix of operational trials was performed to characterize the turbine hydrodynamic performance and the efficiency of the power conversion system. An advanced blade structural monitoring system based on fiber-optics strain sensors was implemented and validated. The full-scale turbine tests were carried out at the hydrodynamics testing infrastructure at the Institute of Marine Engineering of the National Research Council (CNR-INM). This facility, among the largest of its kind globally, provided fully controlled and repeatable conditions that allowed to deliver a high-quality dataset on system performance and reliability, contributing to develope new knowledge for the enhancement of hydrokinetic turbine technology. The results allow ORPC to characterize the strain profile precisely over a rotation and to identify the maximum/minimum strain experienced by the foil for every flow condition tested.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ https://dx.doi.org/1...arrow_drop_down
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    https://dx.doi.org/10.17882/10...
    Dataset . 2024
    License: CC BY NC
    Data sources: Datacite
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    IRIS Cnr
    Dataset . 2024
    License: CC BY NC ND
    Data sources: IRIS Cnr
    SEANOE
    Dataset . 2024
    Data sources: B2FIND
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    Authors: Rafiei, Mohammad; Sellini, Massimiliano; orcid bw Salvatore, Francesco;
    Salvatore, Francesco
    ORCID
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    Salvatore, Francesco in OpenAIRE

    The Institute of Marine Engineering of the National Research Council (CNR-INM) carries out activities in the field of renewable energy from marine sources. In this context, the ULYSSES and ULYSSES 2030 projects mainly conduct studies on the exploitation of energy from tidal currents. One of the activities currently underway is to design and build a scale model of a vertical axis turbine for experimental studies on the production of energy from marine currents, with the aim of conducting studies both on the hydrodynamic performance and on the conversion and control system of the energy captured. The document describes main technical requirements for the realization of the Power Take-Off system (PTO) of a model-scale tidal turbine and its sensors equipment, to be used for experimental research. The configuration of some examples of existing scale model turbines was studied, and then a layout of the ULYSSES turbine was proposed compared to those well-proven configurations. The ULYSSES turbine will be a horizontal axis turbine with tree fixed blades rotor connected directly to a Permanent Magnet Synchronous Generator (direct-drive PMSG). The turbine houses instrumentation to measure rotor thrust and torque. Additionally, an incremental encoder is integrated to allow for servo-control of the PMSG as well as to provide position and rotational velocity measurements.

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    Authors: orcid Matteo Gregori;
    Matteo Gregori
    ORCID
    Harvested from ORCID Public Data File

    Matteo Gregori in OpenAIRE
    orcid Francesco Salvatore;
    Francesco Salvatore
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    Francesco Salvatore in OpenAIRE
    orcid Roberto Camussi;
    Roberto Camussi
    ORCID
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    Roberto Camussi in OpenAIRE

    This paper presents a novel theoretical and computational methodology for the generation of an onset turbulent field with prescribed properties in the numerical simulation of an arbitrary viscous flow. The methodology is based on the definition of a suitable distribution of volume force terms in the right–hand side of the Navier–Stokes equations. The distribution is represented by harmonic functions that are randomly variable in time and space. The intensity of the distribution is controlled by a simple PID strategy in order to obtain that the generated turbulent flow matches a prescribed turbulence intensity. A further condition is that a homogeneous isotropic flow is es- tablished downstream of the region where volume force terms are imposed. Although it is general, the proposed methodology is primarily intended for the computational modelling of hydrokinetic turbines in turbulent flows representative of tidal or riverine installations. A first numerical applica- tion is presented by considering the injection of homogeneous and isotropic turbulence with 16% intensity into a uniform unbounded flow. The analysis of statistical properties as auto-correlation, power spectral density, probability density functions, demonstrates that the generated flow tends to achieve satisfactory levels of stationarity and isotropy, whereas the simple control strategy used determines overestimated turbulent intensity levels.

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    https://doi.org/10.20944/prepr...
    Article . 2022 . Peer-reviewed
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    Journal of Marine Science and Engineering
    Article . 2022 . Peer-reviewed
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    https://doi.org/10.20944/prepr...
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      https://doi.org/10.20944/prepr...
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      Journal of Marine Science and Engineering
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    Authors: orcid Capone, Alessandro;
    Capone, Alessandro
    ORCID
    Harvested from ORCID Public Data File

    Capone, Alessandro in OpenAIRE
    orcid bw Di Felice, Fabio;
    Di Felice, Fabio
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    Di Felice, Fabio in OpenAIRE
    orcid bw Salvatore, Francesco;
    Salvatore, Francesco
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    Salvatore, Francesco in OpenAIRE
    Maddukkari, Harish; +2 Authors

    AbstractThe impact of cavitation and inflow perturbation by an upstream support structure on the performance of a horizontal-axis tidal turbine has been studied by experiments at model scale in a depressurized water channel at CNR-INM. Measurements of turbine generated power and thrust have been carried out at varying channel flow speed, tip-speed ratio, and cavitation number. The visualization of cavitation patterns has been associated with the performance measurements to identify the role played by different cavitation types on turbine behavior. Radiated noise measurement were also performed to assess the impact of cavitation phenomena on turbine induced acoustic signature.

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    Journal of Ocean Engineering and Marine Energy
    Article . 2023 . Peer-reviewed
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      Journal of Ocean Engineering and Marine Energy
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    Authors: Mohammad Rafiei; orcid bw Francesco Salvatore;
    Francesco Salvatore
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    Francesco Salvatore in OpenAIRE

    This report describes the realization of a comprehensive digital model of the Calm Water Towing (CWT) tank facility at the Institute of Marine Engineering (CNR-INM). The digital model describes the full infrastructure, including the tank and the towing carriage, and provides a digital twin that allows to simulate the various phases in preparation, execution and decommissioning of experimental activities in the facility. The digital twin has been developed in a Solid Works software environment and consists in a digital project, with drawings, previews, rendering and animations that can be downloaded in the most popular formats. In the report, the methodology has been described and examples of applications of the digital tool to ongoing and future activities are described. The activity has been undertaken and partially funded in the framework of the CNR Project ULYSSES 2030 (Underpinning Laboratory for Sea Energy Systems) and of the EU-funded project, H2020 CRIMSON, dealing with the demonstration of innovative hydrokinetic turbines for the exploitation of tidal and river energy. Nonetheless, the validity of the digital twin is general, with application to all types of testing programs in the facility.

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    Authors: orcid bw Danilo Calcagni;
    Danilo Calcagni
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    Danilo Calcagni in OpenAIRE
    orcid bw Francesco Salvatore;
    Francesco Salvatore
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    Francesco Salvatore in OpenAIRE
    orcid bw Roberto Muscari;
    Roberto Muscari
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    Roberto Muscari in OpenAIRE

    The present work deals with the assessment of variable fidelity simulation models to analyze the complex phenomenology of a turbine operating in a tidal stream. In the framework of an Unsteady Loading Tidal Turbine Benchmarking Study by Supergen ORE HUB [Tucker Harvey et al.(2021)], performances of an Horizontal Axis Tidal Turbine (HATT) are extensively analised. A general purpose finite volume solver based on the solution of the unsteady Navier-Stokes equations for multi-block structured grids is considered [Dubbioso et al.(2019), Gregori et al.(2020)]. The turbine has been simulated over a wide range of tip-speed ratios, by means of unsteady RANS simulations, in the frame of reference fixed to the rotating turbine, in uniform onset flow and calm water conditions. Since the work is also focused on the assessment of design-oriented hydrodynamics models, crossvalidation studies between URANS and BIEM (Boundary Integral Equation Model) results are presented. The wake-field by URANS is presented and analised with the aim to validate results by lower fidelity models. The wake-field has been processed and geometrical parameters of the trailing wake geometry were derived, allowing, in principle, the improvement of simplified wake models as those adopted by the BIEM.

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