Zerrendatu Artikuluak-Ingeniaritza honen arabera: egilea "dbfa60696c26e454f8955e6fec3c91da"
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Assessing the statistical validity of momentum-deficit-based measurements in turbulent configurations
Zarketa-Astigarraga, Ander; Martin-Mayor, Alain; Martinez Agirre, Manex; Penalba, Markel (Elsevier Ltd., 2021)An application-agnostic procedure is outlined for checking the validity of momentum-deficit-based drag measurements performed under different turbulent conditions in a wind tunnel. The approach defines a two-step methodology: ... -
Benchmarking of spectral methods for fatigue assessment of mooring systems and dynamic cables in offshore renewable energy technologies
Martinez-Puente, Eguzkiñe; Zarketa-Astigarraga, Ander; Martinez Agirre, Manex; Zabala, Alaitz; Esnaola, Jon Ander; Llavori, Inigo; Penalba, Markel (Elsevier, 2024)Fatigue life estimation methods based on time-domain and rainflow counting techniques are widely recognised and accepted for their reliability. However, applying them in scenarios involving random loads with multiple ... -
Evolution of the European offshore renewable energy resource under multiple climate change scenarios and forecasting horizons via CMIP6
Penalba, Markel; Zarketa-Astigarraga, Ander (Elsevier, 2024)The design of the different offshore renewable energy (ORE) technologies depends on the characteristics of wind/wave resources. However, these characteristics are not stationary under climate change. In this study the ... -
Experimental assessment of scale-effects on the aerodynamic characterization of a transitionally-operating airfoil working under clean flow conditions
Zarketa-Astigarraga, Ander; Penalba, Markel; Martin-Mayor, Alain; Martinez Agirre, Manex (Elsevier, 2022)Wind tunnel tests are carried out upon a NACA0021 airfoil subjected to transitional Reynolds numbers. Transitionally-operating airfoils show a high sensitivity to external conditions and pose relevant measurement issues ... -
Experimental uncertainty decompositions of aerodynamic coefficients affected by operative condition variations
Zarketa-Astigarraga, Ander; Martin-Mayor, Alain; Martinez Agirre, Manex (Elsevier Ltd., 2020)A twofold analysis is performed on an experimental set-up comprising a low-Reynolds wind tunnel, with the aim of quantifying the effect of measurand uncertainties and operative condition variations in the lift and drag ... -
A holistic optimization tool for the design of power take-off systems in realistic wave climates: The Wells turbine case
Zarketa-Astigarraga, Ander; Martin-Mayor, Alain; Martinez Agirre, Manex; Penalba, Markel (Elsevier, 2023)The growing demand of energy coupled with the worldwide commitments in favor of renewable technologies turns marine renewable sources especially attractive, including wave energy. In particular, the oscillating water column ... -
Impact of turbulence and blade surface degradation on the annual energy production of small-scale wind turbines
Zarketa-Astigarraga, Ander; Penalba, Markel; Martin-Mayor, Alain; Martinez Agirre, Manex (Wiley, 2023)Small-scale horizontal axis wind-turbines (SHAWTs) are acquiring relevance withinthe regulatory policies of the wind sector aiming at net-zero emissions, while reduc-ing visual and environmental impact by means of distributed ... -
On the Definition of a Comprehensive Technology-Informed Accessibility Metric for Offshore Renewable Energy Site Selection
Centeno-Telleria, Manu; Zarketa-Astigarraga, Ander; Aizpurua Unanue, Jose Ignacio; Penalba, Markel (MDPI, 2023)Despite the important role of offshore renewable energies (OREs) in the energy transition, the economical viability is still unclear. Therefore, an appropriate site selection is crucial. Besides the energy potential, the ... -
A proper orthogonal decomposition analysis upon aerodynamic structures under clean and rough conditions
Zarketa-Astigarraga, Ander; Penalba, Markel; Martin-Mayor, Alain; Martinez Agirre, Manex (AIP Publishing, 2023)A transitional flow regime is known to induce complex flow structures upon aerodynamic geometries such as airfoils, and the dynamics of laminar separation bubbles (LSBs) pose a relevant research field. In addition to being ...