Zerrendatu honen arabera: egilea "00e37e91ca93ab76ad936d3f160f9c20"
-
Aerodynamic characterization of transitionally-operating airfoils under a set of flow conditions going from ideal to real configurations
Zarketa-Astigarraga, Ander (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2021)Applications in which airfoils operate under transitional flow conditions are widespread, comprising micro- and nano-aerial-vehicle wings, portions of mid- and large-scale wind-turbine blades or turbomachinery vanes. The ... -
Analysis of One-Way and Two-Way FSI Approaches to Characterise the Flow Regime and the Mechanical Behaviour during Closing Manoeuvring Operation of a Butterfly Valve
Ezkurra, Mikel; Esnaola, Jon Ander; Martinez Agirre, Manex; Lertxundi, Unai; Etxeberria, Unai (World Academy of Science, Engineering and Technology, 2018)Butterfly valves are widely used industrial piping components as on-off and flow controlling devices. The main challenge in the design process of this type of valves is the correct dimensioning to ensure ... -
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 ... -
Breakage risk analysis during the glass tempering process based on fluid-structure interaction approach
Iglesias, Asier; Martinez Agirre, Manex; Llavori, Inigo; Esnaola, Jon Ander (Springer Nature, 2024)In recent decades, there has been a perceptible transformation in how glass is perceived, evolving from being used for its aesthetic appeal to being acknowledged for its structural capabilities. Structural glass components ... -
Contact angle measurement for LiBr aqueous solutions on different surface materials used in absorption systems
Fernandez de Arroiabe, Peru; Martinez Agirre, Manex; Bou-Ali, M. Mounir (Elsevier Ltd., 2018)Wetting surface is a very important issue for the design of absorption applications and heat exchangers. The contact angle is deemed essential in wettability studies; However, LiBr aqueous solution contact angle studies ... -
Desarrollo de la metodología numérica para el análisis del comportamiento de absorbedores falling film de LiBr-H2O
Fernandez de Arroiabe, Peru (Mondragon Unibertsitatea. Mondragon Goi Eskola Politeknikoa, 2021)In this doctoral thesis, the influence of operating conditions and thermophysical transport properties on the behaviour of falling film absorbers operating with the LiBr − H2O mixture in absorption technologies has been ... -
Development of a numerical fluid-structure interaction methodology to model transient leakage phenomena
Ezkurra, Mikel (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2021)In applications that require the storage or transport of a fluid, ensuring leaktightness is essential. The emergence of leaks can have serious consequences, both for the system and its environment. There exist critical ... -
Effect of liner thermal properties and liner pre-cooling on the thermal management of fast-filling of hydrogen tanks
Blanco-Aguilera, Ricardo; Martinez Agirre, Manex; Berasategi Arostegi, Joanes; Penalba, Markel; Bou-Ali, M. Mounir; Shevtsova, Valentina (Elsevier, 2024)In transportation applications, filling high pressurised hydrogen tanks within a few minutes implies a fast and large temperature increase that can compromise the structural integrity of the storage system and the safety ... -
The effect of small perturbation on dynamics of absorptive LiBr–water solution
Fernandez de Arroiabe, Peru; Martinez Agirre, Manex; Bou-Ali, M. Mounir; Shevtsova, Valentina (AIP Publishing, 2024)In a binary solution of lithium bromide–water, even a small disturbance in the initial homogeneous mass fraction at the absorbing interface has profound effects on the entire system dynamics. This perturbation of absorption ... -
Evaluación probabilística del vidrio templado basada en simulación multifísica avanzada de proceso y desempeño
Iglesias, Asier; Llavori, Inigo; Torca, Ireneo; Martinez Agirre, Manex; Esnaola, Jon Ander (Sociedad Española de Integridad Estructural - Grupo Español de Fractura SEIE-GEF, 2023)El vidrio es ampliamente utilizado en aplicaciones estructurales, estando presente en sectores como el sector de la automoción o el sector de la construcción. El comportamiento estructural del vidrio depende principalmente ... -
Experimental and numerical dynamic analysis of press-formeda viscoelastic sanwich structures
Martinez Agirre, Manex (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2011)This dissertation presents the experimental and numerical dynamic analysis of press-formed viscoelastic sandwich structures composed by two thin metallic face layers and a constrained viscoelastic film. Such structures can ... -
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 ... -
Fatigue Life Assessment for Wave Energy Converter Mooring Lines under Realistic Wave Climates
Martinez-Puente, Eguzkiñe; Zarketa-Astigarraga, Ander; Esnaola, Jon Ander; Zabala, Alaitz; Martinez Agirre, Manex; Llavori, Inigo; Penalba, Markel (EWTEC, 2023) -
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 ... -
Industria eolikoko palen efizientzia aerodinamikoaren azterketa esperimentala baldintza ideal eta errealetan
Zarketa-Astigarraga, Ander; Penalba, Markel; Martin-Mayor, Alain; Martinez Agirre, Manex (UEU, 2021)The paradigm of renewable energies brings a number of challenges to be solved in a short-term period. In the case of wind energy, it turns necessary to relocate onshore wind-farms in both offshore coastal regions and urban ... -
Influence of gravity on dynamics of absorbing binary mixture
Fernandez de Arroiabe, Peru; Martinez Agirre, Manex; Bou-Ali, M. Mounir; Shevtsova, Valentina (Elsevier, 2025)A small perturbation in the absorption process disrupts the equilibrium, leading to surface tension gradients and, subsequently, Marangoni flows. This study examines the comparative role of gravity in the evolution of ... -
Low speed wind tunnel design, setup. validation and testing of airfoils in turbulent inflow conditions
Torrano, Ivan (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2016)The present work aims to design and setup a low speed wind tunnel (LSWT) to be constructed at Mondragon Unibertsitatea for aerodynamic performance analysis of airfoils at low Re number. With this purpose, flow field ...
