Autor/s de la URV: | Huera Huarte, Francisco Javier
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Autor segons l'article: | Huera-Huarte, Francisco J
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Adreça de correu electrònic de l'autor: | francisco.huera@urv.cat
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Identificador de l'autor: | 0000-0002-5447-3183
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Any de publicació de la revista: | 2023
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Tipus de publicació: | Journal Publications
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Referència de l'ítem segons les normes APA: | Huera-Huarte, Francisco J (2023). Pitching foil propulsion performance decays near the free surface. Ocean Engineering, 272(), 113663-. DOI: 10.1016/j.oceaneng.2023.113663
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Referència a l'article segons font original: | Ocean Engineering. 272 113663-
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Resum: | A series of experiments reveal the non-linear relationship between the propulsive performance of a pitching foil and its distance to the free surface. An especially designed robotic device allowed to sinusoidally actuate a symmetric NACA 0021 profile, with its shaft being perpendicular to the free surface, at different separations from it, whilst measuring hydrodynamic loads, power and efficiency. Digital Particle Image Velocimetry (DPIV) was used to study the flow structures around the flapping system, to better understand the performance trends observed. Efficiency dropped more than a 40% when the foil was placed at a distance of approximately 5 to 10% of the span of the system, as a consequence of a large decrease in thrust and a large increase in power, both clearly linked to wake formation.
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DOI de l'article: | 10.1016/j.oceaneng.2023.113663
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Enllaç font original: | https://www.sciencedirect.com/science/article/pii/S0029801823000471
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Versió de l'article dipositat: | info:eu-repo/semantics/publishedVersion
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Accès a la llicència d'ús: | https://creativecommons.org/licenses/by/3.0/es/
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Departament: | Enginyeria Mecànica
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URL Document de llicència: | https://repositori.urv.cat/ca/proteccio-de-dades/
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Àrees temàtiques: | Water resources Oceanography Ocean engineering Interdisciplinar Environmental engineering Engineering, ocean Engineering, marine Engineering, civil Engenharias iv Engenharias iii Engenharias i Ciências ambientais Biodiversidade
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Paraules clau: | Vortex wakes Vortex formation Swimming Pitching foils Free surface Bio-inspired propulsion vortex wakes thrust swimming pitching foils mechanics free surface dynamics
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Entitat: | Universitat Rovira i Virgili
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Data d'alta del registre: | 2024-10-12
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