Listar por autor "Martín-Alcántara, Antonio"
Mostrando ítems 1-8 de 8
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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 ... -
Decarbonizing an industrial process through a combined, high-temperature CSP and sensible heat storage
Martín-Alcántara, Antonio; Serrano-Aguilera, Juan José; Sánchez Sánchez de Puerta, Álvaro; Aranda Hidalgo, José Luis (Elsevier, 2024-07)
Decarbonization is crucial to meet global environmental goals by 2050 and combating climate change. The current work studies a thermal system combining CSP (solar dish) and thermal energy storage (TES) technologies aimed ... -
Modeling the external flow of a novel HorseShoe receiver and the evaluation of thermal performance
Martín-Alcántara, Antonio; Serrano-Aguilera, Juan José; Parras-Anguita, Luis (Elsevier, 2022-10)
The linear receiver of a Parabolic Trough Collector is the most critical element in the entire system. The Universal Vacuum Air Collector concept is the most extended type of receiver in both experimental and industrial ... -
On the autorotation of animal wings.
Ortega-Jimenez, Victor Manuel; Martín-Alcántara, Antonio; Fernández-Feria, Ramón; Dudley, Robert (The Royal Society, 2017)
Botanical samaras spin about their centre of mass and create vertical aerody- namic forces which slow their rate of descent. Descending autorotation of animal wings, however, has never been documented. We report here that ... -
On the development of lift and drag in a rotating and translating cylinder
Martín-Alcántara, Antonio; Sanmiguel-Rojas, Enrique; Fernández-Feria, Ramón (Elsevier, 2015)
The two-dimensional flow around a rotating cylinder is investigated nu- merically using a vorticity forces formulation with the aim of analyzing quan- titatively the flow structures, and their evolutions, that contribute ... -
Vortex flow structures and interactions for the optimum thrust efficiency of a heaving airfoil at different mean angles of attack
Martín-Alcántara, Antonio; Fernández-Feria, Ramón; Sanmiguel-Rojas, Enrique (AIP Publishing, 2015)
The thrust efficiency of a two-dimensional heaving airfoil is studied computationally for a low Reynolds number using a vortex force decomposition. The auxiliary potentials that separate the total vortex force into lift ...