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Listar por autor "Parras-Anguita, Luis"
Mostrando ítems 21-40 de 43
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Experimental observations of trailing vortices at high Reynolds numbers
Gallardo-Claros, Alejandro; Serrano-Aguilera, Juan José; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (2014-09-25)Experimental techniques applied to the study of wingtip vortices are of great interest for the Fluid Mechanics Community. The available experimental techniques to obtain new insights into trailing vortices, focus on ... -
Experimental study in near-and far-field of trailing vortices and their active control
García Ortiz, José Hermenegildo (UMA Editorial, 2017-10-17)In order to predict the axial development of the wingtip vortices strength, an accurate theoretical model is required. Several experimental techniques have been used to that end, e.g. PIV or hotwire anemometry, but they ... -
Frequency response of Batchelor vortex.
Del-Pino-Peñas, Carlos Manuel; Blanco-Rodríguez, Francisco José; Garrido-Martín, Manuel; Parras-Anguita, Luis (2023)We carried out a frequency response analysis of Batchelor vortex model in two different spatial configurations: punctual and annular jet. The theoretical base flow corresponds to the experimental setting of a wing model ... -
Global stability analysis of the natural convection between two horizontal concentric cylinders
Serrano-Aguilera, Juan José; Blanco-Rodríguez, Francisco José; Parras-Anguita, Luis (ELSEVIER, 2021-06)In this investigation, the 2D flow between two horizontally positioned concentric cylinders (gravity per- pendicular to the axis of the cylinders), where the inner cylinder is kept at constant temperature Ti higher than ... -
Global stability map of the flow in a horizontal concentric cylinder forced by natural convection.
There are a large number of studies in the literature on natural convection in the annulus between horizontal concentric cylinders. However, not many publications dealing with global stability analysis in this kind of flow ... -
Influence of Reynolds number on theoretical models for trailing vortices
Domínguez-Vázquez, Adrián; García-Ortiz, José Hermenegildo; Serrano-Aguilera, Juan José; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (2015-07-09)We conduct direct numerical simulations for a NACA0012 airfoil at Reynolds numbers (Re) ranging from 300 to 7000 to determine the wake behavior behind this wing profile. We characterize the structure of the wing-tip vortex, ... -
Mathematical characterization of factors involved in the occurrence of syringomyelia under weightless conditions.
Torés España, María (2023)Este proyecto de fin de grado tiene como objetivo caracterizar el flujo y comportamiento del líquido cefalorraquídeo (CSF) bajo la influencia de la gravedad. Simulamos condiciones normales y de ingravidez para comparar y ... -
Modeling the external flow of a novel HorseShoe receiver and the evaluation of thermal performance
Martín-Alcántara, A.; 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 ... -
Modelling the squeeze flow in a deformed rectangular microchannel
Parras-Anguita, Luis; Galindo-Rosales, F.J. (2019-04-23)Rheinforce cork composites, previously named elsewhere as CorkSTFluidics [1], are sandwiches consis?ng of two microagglomerated cork pads embedding microfluidic paCerns that are filled with a shear thickening fluid (see ... -
Nonlinear evolution of harmonically forced perturbations on a wingtip vortex
García-Ortiz, José Hermenegildo; Parras-Anguita, Luis; Diamessis, Peter; Del-Pino-Peñas, Carlos Manuel (2016-09-19)Wingtip vortices are created by flying airplanes due to lift generation. The vortex interaction with the trailing aircraft has sparked researchers’ interest to develop an efficient technique to destroy these vortices. ... -
Numerical simulation of the buoyancy flow between two concentric cylinders with azimuthal variable heating
Medina Jiménez, Lucía; Serrano-Aguilera, Juan José; Blanco-Rodríguez, Francisco José; Parras-Anguita, Luis (Prof JP Meyer. Proceedings of the 15th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2021), 2021-07-26)In this work, we present novel results of the buoyancy driven flow between two concentric cylinders, when an azimuthal thermal gradient is imposed to the inner cylinder. To accomplish that, angular-dependent temperature ... -
On the effect of low blowing ratio continuous jets on wingtip vortex characteristics
Blanco-Rodríguez, Francisco José; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel; García Ortiz, José Hermenegildo (2018-09-03)Vortices are an unavoidable effect of flight, which appear behind the wing with a bounded length. The strength of these vortices, which are extremely stable, is due to the lift force [1]. That is the reason why this ... -
On the optimaL response of q-vortex
Rodríguez-García, Jesús Óscar; Blanco-Rodríguez, Francisco José; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (2016-09-19)Wingtip vortices represent a hazard for the stability of the following airplane in airport highways. These flows have been usually modeled as swirling jets/wakes, which are known to be highly unstable and susceptible to ... -
On the steady and unsteady aerodynamics of wing models at low Reynolds numbers for micro air vehicle applications
Aguilar-Cabello, Jorge (UMA Editorial, 2021-12-14)Resumen tesis:In this thesis we have studied the stationary and non-stationary aerodynamic characteristics of wings at low Reynolds numbers commonly achieved in MAVS vehicles. The lift coefficient for a flat plate at low ... -
Parabolic trough collectors. Fundamentals of heat transfer applied to solar thermal energy.
Solar thermal energy has undergone major development in recent years. The most widely used technologies are central receiver solar towers and parabolic trough collectors (PTC)[1]. The latter technology has great advantages ... -
PIV measurements of the effect of pulsed blowing jet on a NACA0012 wing model
García Ortiz, José Hermenegildo; Aguilar-Cabello, Jorge; Guzmán Gómez, Alicia; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (Congress for the 19th Laser Symposium, 2018-07-16)Wingtip vortices are present in taking off, and landing operations and their presence in airport runways must be reduced. To that end, several strategies have been considered in the last decades, being the active control ... -
Simulations of a tornadic supercell event in the south of Spain: Sensitivity to initial and boundary conditions and microphysics parameterizations
Bello-Millán, Francisco Javier; Palacios, Julián; Gutiérrez-Castillo, Paloma; Parras-Anguita, Luis (Elsevier, 2024-01-24)A tornadic supercell near the village of Campillos (Malaga province) occurred on 26 August 2019 with several associated damages. In this study, we analyze the sensitivity of the Weather Research and Forecasting (WRF) model ... -
Stability analysis of flow structures in hovering using robotic experiments and flow visualizations
Marín-Navarro, Alejandro; Aguilar-Cabello, Jorge; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (Lisbon Laser Symposium, 2018)We investigate the kinematics and stability of hovering flight making use of a robotic experimental device that simulate the movement of insects or birds. We carried out this analysis based on the characterization of ... -
Theoretical parameters of trailing vortices versus aspect ratio of wing models
Aguilar-Cabello, Jorge; Jiménez-Rodríguez, Alberto; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (2019-07-18)We perform 2D-PIV measurements to characterize trailing vortices in NACA0012 wing models for aspect ratios ranging between 1 and 2.5, and for chord-based Reynolds numbers from 7000 to 40000. Firstly, and regarding the ... -
Thermal-hydraulic and optical modeling of solar Direct Steam Generation systems based on Parabolic-Trough Collectors
Serrano-Aguilera, Juan José (UMA Editorial, 2017-08-28)CSP systems based on Parabolic-Trough Collectors (PTCs) account for a representative share of the global solar thermal capacity installed. Most of the existing PTC power plants use synthetic oil as heat transfer fluid. ...