• Effect of the axial jet on the optimal response in Batchelor vortex 

      Blanco-Rodriguez, Maria Jose; García-Ortiz, J. Hermenegildo; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (2015-09-25)
      En este póster se estudia la respuesta óptima del torbellino de Batchelor para distintos números de onda. Se demuestra que incluso teniendo la velocidad axial, un torbellino es capaz de tener grandes amplificaciones de energía.
    • Estudio experimental y numérico del comportamiento de un modelo de difusor de aire por desplazamiento acoplado a un suelo frío 

      Fernández-Gutiérrez, Alberto; Parras-Anguita, Luis; González-Prieto, Ignacio; Del-Pino-Peñas, Carlos Manuel; Cejudo-Lopez, Jose Manuel (2013-07-10)
      En la última década se han realizado muchos trabajos sobre sistemas de refrigeración para grandes superficies usando ventilación por desplazamiento con suelos radiantes (por ejemplo en aeropuertos y estaciones). De especial ...
    • Experimental and numerical study of the wake behind a wing with a NACA0012 airfoil and comparison with theoretical models at moderate Reynolds numbers 

      Parras-Anguita, Luis; Domínguez-Vázquez, Adrián; Del-Pino-Peñas, Carlos Manuel (2014-09-24)
      Axial wing tip vortex characterization is a relevant issue not only from a theoretical point of view but also due to its interest in control engineering applications. An experimental study has been performed displacing a ...
    • Experimental characterization of wingtip vortices using smoke flow visualizations 

      Serrano-Aguilera, Juan José; García-Ortiz, José Hermenegildo; Gallardo-Claros, Alejandro; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (2016-07-20)
      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 ...
    • 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 ...
    • Higher order dynamic mode decomposition to identify decay in trailing vortices 

      Gutiérrez Castilllo, Paloma; Garrido Martín, Manuel; Bölle, Tobias; García Ortiz, José Hermenegildo; Aguilar Cabello, Jorge; [et al.] (2022)
      We conduct three-dimensional measurements of the velocity field using stereo PIV in the turbulent wake of a wing model based on a NACA0012 airfoil, for an angle of attack of 9 degrees, and Reynolds number 40000 up to 32 ...
    • Influence of Reynolds number on theoretical models for trailing vortices 

      Domínguez-Vázquez, Adrián; García-Ortiz, J. 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, ...
    • 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. ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Wingtip vortex in a NACA0012 airfoil and its active control 

      García-Ortiz, J. Hermenegildo; Blanco-Rodriguez, Maria Jose; Parras-Anguita, Luis; Del-Pino-Peñas, Carlos Manuel (2015-09-09)
      We conduct experiments in a towing-tank to analyse the flow patterns of wingtip vortices in a NACA 0012 airfoil. In this experimental research, we provide PIV measurements and flow visualisations. Without active control, ...