Now showing items 1-20 of 22

  • A simple measuring technique of surface flow velocity to analyze the behavior of velocity fields in hydraulic engineering applications 

    Tellez Alvarez, Jackson David; Gómez Valentín, Manuel; Russo, Beniamino; Redondo Apraiz, José Manuel (2015-04-14)
    Article
    Open Access
    An important achievement is the invention and development of techniques for measurement of velocities in hydraulic engineering applications. Knowledge of the technological advances in digital cameras with high resolution ...
  • Comparación de métodos de análisis de imágenes para determinar el campo de velocidades en las cercanías de las rejas de alcantarillado 

    Tellez Alvarez, Jackson David; Gómez Valentín, Manuel; Russo, Beniamino; Zanon, Federico (2017)
    Conference report
    Open Access
    El objetivo de este trabajo es la comparación de los campos de velocidades y caudales captados a través de la técnica Surface Flow Image Velocimetry (SFIV) frente a los datos de ensayo experimental, que pudiera ayudar a ...
  • Estimación de la eficiencia hidráulica de rejillas transversales, a partir de la geometría de las mismas 

    Tellez Alvarez, Jackson David (Universitat Politècnica de Catalunya, 2012-02-01)
    Master thesis
    Restricted access - confidentiality agreement
  • EXPERIMENTS AND SIMULATIONS OF MAXIMAL SCULLING PROPULSION: VORTICITY IMPULSE IN HUMAN BIOMECHANICS 

    Furmanek, Petr; Redondo Apraiz, José Manuel; García Carrillo, Àgueda; Tellez Alvarez, Jackson David; Arellano, Raul; Sanchez, Jesus maria (2016)
    Conference report
    Open Access
    The detailed study of the turbulence and the fluid flow in sport is an open and exciting field of research, in particular in swimming and aquatic sports there is a wealth of new techniques that may aid performance. In ...
  • Fractal analysis of growing cities and its relationship with health centre 

    Leyton, Carolina; Redondo Apraiz, José Manuel; Tarquis Alfonso, Ana Maria; Gil Martín, Joan Carles; Tellez Alvarez, Jackson David (Moscow Institute of Physics and Technology (MIPT), 2017-06-06)
    Article
    Open Access
    During recent years, many research group interested in the study of organizational networks from different fields, e.g. studies of behavior of cities growth following the fractal theory. Considering the fractal analysis ...
  • Fractal analysis of growing cities and its relationship with health centre distribution 

    Leyton, Carolina; Redondo Apraiz, José Manuel; Gil Martín, Joan Carles; Tellez Alvarez, Jackson David; Tarquis Alfonso, Ana Maria (Moscow Institute of Physics and Technology (MIPT), 2017-04-15)
    Article
    Open Access
    During recent years, many research group interested in the study of organizational networks from different fields, e.g. studies of behavior of cities growth following the fractal theory. Considering the fractal analysis ...
  • Image processing and experimental techniques to characterize the hydraulic performance of grate inlets 

    Tellez Alvarez, Jackson David (Universitat Politècnica de Catalunya, 2019-05-10)
    Doctoral thesis
    Open Access
    This Doctoral Thesis dissertation concerns two main research topic: the analysis of the flow velocity pattern in the nearness of a grate inlet through Surface Flow Image Velocimetry (SFIV) technique and the study of overflow ...
  • Intermittency and multi-fractal velocimetry (IMFV) in Rayleigh-Taylor and convective flows 

    Tellez Alvarez, Jackson David; Malik, Nadeem; Vila, Teresa; Redondo Apraiz, José Manuel (2016)
    Conference report
    Restricted access - publisher's policy
    New descriptors to investigate mixing in multi-scale turbulence analysis and couple PIV Laser induced applications with Fractal analysis in Shock induced flows as well as in convective driven flows are discussed. The ...
  • Methodology to estimate the hydraulic efficiency of nontested continuous transverse grates 

    Russo, Beniamino; Gómez Valentín, Manuel; Tellez Alvarez, Jackson David (2013)
    Article
    Restricted access - publisher's policy
    The aim of this paper is to improve and complete the results presented in a previous work published on this journal about an experimental campaign focused on the hydraulic efficiency of continuous transverse grates for ...
  • Metodologia para la obtención del campo de velocidad en la proximidad de las rejas de alcantarillado 

    Tellez Alvarez, Jackson David; Gómez Valentín, Manuel; Russo, Beniamino; Redondo Apraiz, José Manuel (2016)
    Conference report
    Restricted access - publisher's policy
    Los grandes cambios urbanísticos de las últimas décadas en nuestras ciudades han modificado significativamente su respuesta hidrológica frente a un evento de lluvia. Esto se traduce en un aumento de las velocidades de ...
  • Mixing and entrainment in convective flows, jets and grid turbulence 

    Redondo Apraiz, José Manuel; Tellez Alvarez, Jackson David; Sanchez Carcar, Jesus Maria (2015-12-02)
    External research report
    Open Access
    New industrial and didactic flow solutions based on new flow concepts are needed to meet the unprecedented requirements set by the dramatically increasing energy needs, the use of Thermoelectric didactive devices are neded ...
  • Mixing in convective thermal fluxes in unsteady nonhomogeneous flows generating complex three dimensional vorticity patterns 

    Redondo Apraiz, José Manuel; Tellez Alvarez, Jackson David; Sanchez, Jesus M.; Lopez Gonzalez-Nieto, Pilar (2016)
    Conference report
    Open Access
    Diffusion and scaling of the velocity and vorticity in a thermoelectric driven heating and cooling experimental device is presented in order to map the different patterns and transitions between two and three dimensional ...
  • Multifractal analysis of a wake for a single wind turbine 

    Strijhak, Sergei; Redondo Apraiz, José Manuel; Tellez Alvarez, Jackson David (2017)
    Conference report
    Open Access
    Wind energy is an important component of renewable energy sources. Studying of turbulent wakes for wind turbines and interactions with Atmospheric Boundary Layer is an urgent problem. The theory of chaos and fractal geometry ...
  • Multifractal analysis of turbulent wakes for model wind turbines using large eddy simulation 

    Tellez Alvarez, Jackson David; Kryuchkova, Arina; Strijhak, Sergei; Redondo Apraiz, José Manuel (2018)
    Conference report
    Open Access
    Over the last years it has become evident that one of the greatest problems during wind turbine operations is related to intermittency between turbulent flow and the blades. An adjacent problem consists in coupling and ...
  • Ocean classification of dynamical structures detected by SAR and spectral methods 

    Redondo Apraiz, José Manuel; Martínez Benjamín, Juan José; Tellez Alvarez, Jackson David; Jorge Sánchez, Juan; Díez Rilova, Margarita; Sekula, Emil (European Space Agency (ESA), 2016)
    Conference report
    Open Access
    We discuss a taxonomy of different dynamical featuresin the ocean surface and provide some eddy and frontstatistics, as well as describing some events detected byseveral satellites and even with additional cruise observationsand ...
  • Richtmyer-meshkov and rayleigh-taylor fractal mixing 

    Redondo Apraiz, José Manuel; Tellez Alvarez, Jackson David; Vila, Teresa; Lopez Gonzalez-Nieto, Pilar; Sanchez, Jesus Maria (2016)
    Conference report
    Open Access
    Turbulence affects molecular mixing in a large variety of physical processes both in the environment, in astrophysics and in industrial situations. In some events it is interesting to enhance the transport of mass, heat, ...
  • Richtmyer-meshkov and rayleigh-taylor fractal mixing 

    Redondo Apraiz, José Manuel; Vila Esteve, Maria Teresa; Tellez Alvarez, Jackson David; Lopez Gonzalez-Nieto, Pilar; Sánchez, Miguel Ángel (Institute of Thermomechanics, Academy of Sciences of the Czech Republic, 2016-02-10)
    Article
    Open Access
    Turbulence affects molecular mixing in a large variety of physical processes both in the environment, in astrophysics and in industrial situations. In some events it is interesting to enhance the transport of mass, heat, ...
  • Simulating the hydrodynamics of sewer-grates using a 2D-hydraulic model 

    Sanz Ramos, Marcos; Tellez Alvarez, Jackson David; Bladé i Castellet, Ernest; Gómez Valentín, Manuel (Société Hydrotechnique de France (SHF), 2019)
    Conference report
    Restricted access - publisher's policy
    Sewer inlets are one of the most important elements for avoiding floods in urban areas, capturing runoff and introducing into the sewer system. Traditionally the inlets have been designed by resistance criteria, without ...
  • Surface Flow Image Velocimetry (SFIV) for hydraulics applications 

    Tellez Alvarez, Jackson David; Gómez Valentín, Manuel; Russo, Beniamino; Redondo Apraiz, José Manuel (2016)
    Conference report
    Restricted access - publisher's policy
    Surface Flow Image Velocimetry (SFIV), is a practical extension of Particle Image Velocimetry (PIV), as one of the major effective techniques in hydraulics providing velocity and vorticity fields in fast flow laboratory ...
  • Technique for visualization of complex fluxes 

    Tellez Alvarez, Jackson David; Gómez Valentín, Manuel; Russo, Beniamino; Redondo Apraiz, José Manuel (Print Pro, 2016)
    Conference report
    Restricted access - publisher's policy
    We present a new technique of turbulence analysis in fast flowing flows such as those encountered in hydraulic applications. Surface Flow image velocimetry (SFIV) allows to measure complex surface velocity fields in ...