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Pitching foil propulsion performance decays near the free surface - imarina:9292124

Autor/es de la URV:Huera Huarte, Francisco Javier
Autor según el artículo:Huera-Huarte, Francisco J
Direcció de correo del autor:francisco.huera@urv.cat
Identificador del autor:0000-0002-5447-3183
Año de publicación de la revista:2023
Tipo de publicación:Journal Publications
Referencia 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
Referencia al articulo segun fuente origial:Ocean Engineering. 272 113663-
Resumen: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.
DOI del artículo:10.1016/j.oceaneng.2023.113663
Enlace a la fuente original:https://www.sciencedirect.com/science/article/pii/S0029801823000471
Versión del articulo depositado:info:eu-repo/semantics/publishedVersion
Acceso a la licencia de uso:https://creativecommons.org/licenses/by/3.0/es/
Departamento:Enginyeria Mecànica
URL Documento de licencia:https://repositori.urv.cat/ca/proteccio-de-dades/
Áreas temáticas:Water resources
Oceanography
Ocean engineering
Interdisciplinar
Environmental engineering
Engineering, ocean
Engineering, marine
Engineering, civil
Engenharias iv
Engenharias iii
Engenharias i
Ciências ambientais
Biodiversidade
Palabras clave:Vortex wakes
Vortex formation
Swimming
Pitching foils
Free surface
Bio-inspired propulsion
vortex wakes
thrust
swimming
pitching foils
mechanics
free surface
dynamics
Entidad:Universitat Rovira i Virgili
Fecha de alta del registro:2024-10-12
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