Autor según el artículo: Huera-Huarte, FJ
Departamento: Enginyeria Mecànica
Autor/es de la URV: Huera Huarte, Francisco Javier
Palabras clave: Vortex wakes Vortex formation Swimming Pitching foils Free surface Bio-inspired propulsion vortex wakes thrust swimming pitching foils mechanics free surface dynamics
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.
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
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: francisco.huera@urv.cat
Identificador del autor: 0000-0002-5447-3183
Fecha de alta del registro: 2023-12-17
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S0029801823000471
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Ocean Engineering. 272
Referencia de l'ítem segons les normes APA: Huera-Huarte, FJ (2023). Pitching foil propulsion performance decays near the free surface. Ocean Engineering, 272(), -. DOI: 10.1016/j.oceaneng.2023.113663
DOI del artículo: 10.1016/j.oceaneng.2023.113663
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2023
Tipo de publicación: Journal Publications
Repositori URV