Ara es mostren els items 1-20 de 30

    • 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
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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 ...
    • Convective thermal fluxes in unsteady non-homogeneous flows 

      Tellez Alvarez, Jackson David; Redondo Apraiz, José Manuel; Sanchez Carcar, Jesus Maria; Lopez Gonzalez-Nieto, Pilar (2019-07)
      Article
      Accés obert
      In this paper we describe a novel experimental apparatus consisting of a thermoelectric driven heating and cooling device that could be used in didactic laboratories and research. Is possible to model common environmental ...
    • Discharge coefficients for specific grated inlets: influence of the Froude number 

      Cosco, Chiara; Gómez Valentín, Manuel; Russo, Beniamino; Tellez Alvarez, Jackson David; Macchione, Francesco; Costanzo, Carmelina (2020-09)
      Article
      Accés obert
      Surface drainage systems play a key role in the urban system. To assess the flow intercepted by inlets, some approaches use recent experimental campaigns or are based on orifice or weir formulas. In this work, real scale ...
    • Discharge coefficients to be used in inlet hydraulics 

      Gómez Valentín, Manuel; Tellez Alvarez, Jackson David; Russo, Beniamino (Emerald Publishing Limiting, 2023-09)
      Article
      Accés restringit per política de l'editorial
      Urban pluvial floods can be produced or exacerbated by an insufficient density of inlets or by their poor hydraulic efficiency. Therefore, proper consideration of the hydraulic performance of inlets is essential to guarantee ...
    • 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)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
    • 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)
      Text en actes de congrés
      Accés obert
      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
      Accés obert
      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
      Accés obert
      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)
      Tesi
      Accés obert
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Report de recerca
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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 ...
    • Numerical and experimental approaches to estimate discharge coefficients and energy loss coefficients in pressurized grated inlets 

      Tellez Alvarez, Jackson David; Gómez Valentín, Manuel; Russo, Beniamino; Amezaga Kutija, Marko (Multidisciplinary Digital Publishing Institute (MDPI), 2021-12)
      Article
      Accés obert
      Numerical models concerning inlet systems are run to assess the hydraulic performance of existing or new systems and estimate the flow interchanges between the surface overland and sewer flows. In most programs, these ...
    • 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)
      Text en actes de congrés
      Accés obert
      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 ...
    • Quantification of energy loss in two grated inlets under pressure 

      Tellez Alvarez, Jackson David; Gómez Valentín, Manuel; Russo, Beniamino (2020-06)
      Article
      Accés obert
      Grated inlets have the normal function of collecting the surface runoff into sewer networks, but when the flow exceeds the capacity of the sewer pipes and conduits get pressurized, an outflow from the sewer manholes and ...