Ara es mostren els items 31-50 de 81

    • Large eddy simulation and laboratory experiments on the decay of grid wakes in strongly stratified flows 

      Fraunie, P.; Chashechkin, Y.; Redondo Apraiz, José Manuel; Velasco Montes, David; Rayo Berreba, S. (2009-07-27)
      Article
      Accés obert
      A detailed analysis of the flow structure resulting from the combination of turbulence and internal waves is carried out and visualized by means of the Schlieren method on waves in a strongly stratified fluid at the ...
    • Lift off and turbidity currents in the environment 

      Redondo Apraiz, José Manuel (Institute of Thermomechanics, Academy of Sciences of the Czech Republic, 2014)
      Comunicació de congrés
      Accés obert
      This contribution presents an experimental investigation on the behaviour of sediments in a turbulent boundary layer flow, it compares the energy and vorticity needed to generate a turbidity current and the zero mean ...
    • Marine pollution in European coastal waters monitored by the ERS-2 SAR: a comprehensive statistical analysis 

      Gade, Martin; Redondo Apraiz, José Manuel (1999)
      Text en actes de congrés
      Accés obert
      The oil pollution of the southern Baltic Sea, the North Sea, and the northwestern Mediterranean Sea has been studied within a two-year period from December 1996 until November 1998. In total, the authors have analyzed more ...
    • 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 ...
    • Mezcla turbulenta por rejilla oscilante : nuevos experimentos y técnicas de alta resolución 

      Redondo Apraiz, José Manuel; Sánchez Ariz, Miguel Ángel; Salud Puig, Josep (2015-07-05)
      Report de recerca
      Accés obert
      We present several experimental studies on Turbulent Mixing produced by the advance of a density interface produced by brine when an oscilating grid produces zero-mean turbulence at a certain vertical distance. The older ...
    • 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 efficiency across Rayleigh-Taylor and Richtmeyer-Meshkov fronts 

      Redondo Apraiz, José Manuel; Lopez Gonzalez-Nieto, Pilar; Cano Marchante, Jose Leandro; Andrés Garzón, Germán (World Scientific Publishing, 2015-06-03)
      Article
      Accés obert
      Mixing generated by gravitational acceleration and the role of local turbulence measured through multifractal methods is examined in numerical experiments of Rayleigh-Taylor and Richtmyer-Meshkov driven front occurring ...
    • Mixing efficiency in buoyant flows 

      Redondo Apraiz, José Manuel; Lopez Gonzalez-Nieto, Pilar; Díez Rilova, Margarita (Institute of Thermomechanics, Academy of Sciences of the Czech Republic, 2012-02-15)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • 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 ...
    • Montaje experimental para el estudio de la mezcla generada por penachos turbulentos 

      Lopez Gonza, Pilar; Cano Marchante, Jose Leandro; Redondo Apraiz, José Manuel; Tijera, Manuel (Universidad Complutense de Madrid (UCM), 2009-09-01)
      Article
      Accés obert
      Se presenta un sencillo modelo de laboratorio para generar mezcla turbulenta entre dos fluidos miscibles que están en una situación inicial inestable en un campo gravitatorio. El proceso de mezcla se genera por medio de ...
    • 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 sar of the ocean surface, currents, eddy structure, oil slicks and diffusivity analysis 

      Redondo Apraiz, José Manuel; Grau, J.; Matulka, A.; Platónov, Alexéi Konstantínovich (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2008-04-08T15:52:51Z)
      Article
      Accés obert
    • Multifractal analysis of SAR of the ocean surface, currents, eddy structure, oil slicks and diffusivity analysis 

      Redondo Apraiz, José Manuel; Grau, J.; Matulka, Anna Magdalena; Platónov, Alexéi Konstantínovich (2010)
      Comunicació de congrés
      Accés restringit per política de l'editorial
    • 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 ...
    • Multifractal observations of eddies, oil spills and natural slicks in the ocean surface 

      Platónov, Alexéi Konstantínovich; Carrillo Cortés, José Alejandro; Matulka, Anna Magdalena; Sekula, Emil; Grau Barceló, Joan; Redondo Apraiz, José Manuel; Tarquis, Ana Maria (2009-06-11)
      Article
      Accés restringit per política de l'editorial
      Natural and man-made distributions of tensioactive substance concentrations in the sea surface features exhibit self-similarity at all radar reflectivity levels when illuminated by SAR. This allows the investigation of the ...
    • Multiscale analysis of SAR from the earth surface 

      Redondo Apraiz, José Manuel; Tarquis, Ana Maria; Matulka, Anna Magdalena; Platónov, Alexéi Konstantínovich (Universidad Complutense de Madrid (UCM), 2010)
      Comunicació de congrés
      Accés obert
      The use of Synthetic Aperture Radar (SAR) to investigate the earth’s surface provides a wealth of useful information. Here we will discuss some recent fractal and multi-fractal techniques used to identify oil spills and ...
    • Multiscaling properties on sequences of turbulent plumes images 

      Lopez Gonzalez-Nieto, Pilar; Tarquis Alfonso, Ana Maria; Matulka, Anna Magdalena; Skadden, Benjamin; Redondo Apraiz, José Manuel (2017-12-01)
      Article
      Accés obert
      A multifractal analysis on a finite-range-scale of the plume concentration images at different experimental conditions (the height of the source Ho), where the measure is the grey value of the image (from 0 to 255), was ...
    • Non-linear fractal percolation experiments in carstic and aggregation soils 

      Chierubini, Claudia; Tarquis Alfonso, Ana Maria; Redondo Apraiz, José Manuel; Pastore, Nicola (2014)
      Text en actes de congrés
      Accés obert
      The present study compares the performances and reliabilities of the classical Mobile – Immobile Model (MIM) and the Explicit Network Model (ENM) that takes expressly into account the network geometry for describing tracer ...
    • Numerical LES models of Richtmyer-Meshkov and Rayleigh-Taylor instabilities 

      Garzón Bedoya, Germán; Redondo Apraiz, José Manuel; Rozanov, V.B.; Gushkov, S. (Universidad Complutense de Madrid (UCM), 2010)
      Comunicació de congrés
      Accés obert
      Experimental and numerical results on the advance of a mixing or non-mixing front occurring at a density interface due to gravitational acceleration are analyzed considering the fractal and spectral structure of the front. ...
    • 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 ...