Listar por autor "Fernández-Feria, Ramón"
Mostrando ítems 1-20 de 35
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Aerodynamic vortex interaction with a flapping Foil and between multiple flapping foils, And its application to the design of aerial and aquatic small vehicles
(UMA Editorial, 2021-05-05)Se ha analizado la interacción aerodinámica de un vórtice bidimensional con una placa plana a diferentes ángulos de ataque α usando la teoría de flujo potencial, basada en un mapeado conforme variando la distancia de ... -
Analytical results for the propulsion performance of a flexible foil with prescribed pitching and heaving motions and passive small deflection
Fernández-Feria, Ramón
; Alaminos-Quesada, Javier (Cambridge, 2021-01-28)
The propulsive performance of a flexible foil with prescribed pitching and heaving motions about any pivot point location and passive chordwise flexural deflection is analysed within the framework of the linear potential ... -
Aquatic self-propulsion and energy harvesting from the currents through flexible flapping foils.
(UMA Editorial, 2024)En esta tesis doctoral se analiza principalmente el potencial de los vehículos acuáticos bioinspirados que se propulsan mediante perfiles batientes. En especial, se emplea un enfoque teórico basado en la teoría del movimiento ... -
Assessment of two vortex formulations for computing forces of a flapping foil at high Reynolds numbers
Martín-Alcántara, Antonio; Fernández-Feria, Ramón (American Physical Society, 2019)
Several vortex formulations for computing the lift and drag/thrust forces on a flapping foil are compared in terms of simplicity, accuracy and suitability for using with experimental data of mea- sured velocity and vorticity ... -
Asymptotic analytical solution for the temperature evolution in internally-heated packed-bed tanks for high-temperature solid-air energy storage.
Martín-Alcántara, Antonio; Fernández-Feria, Ramón (Elsevier, 2024)
Unidirectional flow equations through a porous medium with a localized heat source are used to model the fluid and solid temperatures in a packed-bed, internally-heated thermal energy storage (IH-TES) unit. Numerical results ... -
Contribution to the study of nonstationary aerodynamic forces in problems of interest for Micro-Air Vehicles
(UMA Editorial, 2016)The main aim of this dissertation is the quantitative characterization of the contributions of individual fluid elements (vortices) to aerodynamic forces, explaining and quantifying the mechanisms by which both drag and ... -
Dynamics of the wing-tip vortex in the near field of a NACA 0012 aerofoil
Del-Pino-Peñas, Carlos Manuel; López-Alonso, José Manuel; Parras-Anguita, Luis; Fernández-Feria, Ramón (Cambridge University Press, 2011-04)
The dynamics of the wing tip vortex in the near-field of a NACA 0012 aerofoil has been analysed by means of flow visualisations in a water tunnel. Different axial distances near the wing up to four chords, Reynolds numbers ... -
Effect of flexibility on the self-propelled locomotion by an elastically supported stiff foil actuated by a torque.
López-Tello, Pablo Esteban; Fernández-Feria, Ramón (American Physical Society, 2023-06-20)
A theoretical model is presented for the locomotion of an aquatic vehicle propelled by a flexible foil elastically mounted to translational and torsional springs and dampers at an arbitrary pivot axis and actuated by a ... -
Effects of inertia on the time-averaged propulsive performance of a pitching and heaving foil
Fernández-Feria, Ramón (Elsevier, 2023)
The inertia may play an important role in the unsteady behavior of a flapping foil. Of particular relevance in forward flapping locomotion is how the foil inertia may affect its time-averaged propulsive performance. This ... -
Efficient self-propelled locomotion by an elastically supported rigid foil actuated by a torque
López-Tello, Pablo Esteban; Fernández-Feria, Ramón; Sanmiguel-Rojas, Enrique (Elsevier, 2022-11-19)
A new theoretical model is presented for an aquatic vehicle self-propelled by a rigid foil undergoing pitching oscillations generated by a torque of small amplitude applied at an arbitrary pivot axis at which the foil is ... -
Energy Harvesting and Propulsion of Pitching Airfoils with Passive Heave and Deformation.
Fernández-Feria, Ramón; Alaminos-Quesada, Javier (AIAA, 2021-09-16)
A general formulation for the fluid–structure interaction of an airfoil undergoing prescribed pitching and passive heave and deformation about an arbitrary axis is given in the linearized potential flow limit. The resulting ... -
Estudio sobre la estructura y estabilidad de la interacción de un torbellino libre sobre una superficie sólida
Parras-Anguita, Luis (Universidad de Málaga, Servicio de Publicaciones, 2006)
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Estudio teórico y experimental de la estabilidad y rotura de vórtices en conductos
Del-Pino-Peñas, Carlos Manuel (Universidad de Málaga, Servicio de Publicaciones, 2004)
Esta tesis constituye una contribución al estudio de los flujos con giro. Este estudio se realiza desde un punto de vista teórico, mediante la simulación numérica y el análisis de estabilidad espacial y, desde un punto ... -
Flutter stability analysis of an elastically supported flexible foil. Application to the energy harvesting of a fully-passive flexible flapping-foil of small amplitude
Fernández-Feria, Ramón (Elsevier, 2022-02)
The aerodynamic forces on an oscillating flexible foil are used to study the flutter instability when the flexible foil is elastically mounted to translational and torsional springs and dampers at an arbitrary pivot axis. ... -
Force and torque reactions on a pitching flexible aerofoil
Sanmiguel-Rojas, Enrique; Perona, J.L.; Fernández-Feria, Ramón (Cambridge, 2023)
Experimental measurements in a wind tunnel of the unsteady force and moment that a fluid exerts on flexible flapping aerofoils are not trivial because the forces and moments caused by the aerofoil's inertia and others ... -
Linearized potential theory of flapping foils in tandem configuration
Alaminos-Quesada, Javier; Fernández-Feria, Ramón (2018-11-26)
A vortical impulse theory is used to compute the lift, thrust and moment of two-dimensional flapping foils in tandem configuration within the framework of unsteady linear potential theory. First, general expressions are ... -
Mecánica de Fluidos II.
Fernández-Feria, Ramón (2024)
Estos apuntes son una ampliación de la asignatura Mecanica de Fluidos para estudiantes de ingeniería. Por un lado complementa la asignatura más básica para que el estudiante domine otras aplicaciones de la dinámica de los ... -
Mecánica de Fluidos.
Fernández-Feria, Ramón (Universidad de Málaga, 2005)
Este libro es una introducción a la Mecánica de Fluidos, principalmente enfo cada a los estudiantes de Ingeniería. El contenido está pensado para que sea cubierto durante dos cursos: uno más básico, donde se introducen ... -
Modeling Flapping Wing Forward Flight for Bio-Inspired Unmanned Aerial Vehicles
(UMA Editorial, 2025)Los robots de ala batiente, también conocidos como ornitópteros, son una tecnología en rápido desarrollo debido a su potencial para mejorar el rendimiento de multirrotores convencionales. Sin embargo, existe una brecha ... -
Numerical and experimental study of the hydrodynamic efficiency of a tidal energy extraction system and its effect on the re-suspension of sea bed sediments
Cebrián-Robles, Daniel (Universidad de Málaga, Servicio de Publicaciones y Divulgación Científica, 2014)
Este trabajo pretende contribuir a las investigaciones que se están realizando actualmente sobre energías renovables marinas y su obtención a partir de las corrientes de las mareas. En este contexto, una empresa Noruega ...