Now showing items 1-13 of 13

    • 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
      Open Access
      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 ...
    • Evolution of the Thorpe and Ozmidov scales at the lower atmospheric and planetary boundary layer 

      Lopez Gonzalez-Nieto, Pilar; Cano Marchante, Jose Leandro; Redondo Apraiz, José Manuel (Universidad Complutense de Madrid (UCM), 2010)
      Conference lecture
      Open Access
      Turbulence affects the dynamics of atmospheric processes by enhancing the transport of mass, heat, humidity and pollutants. The global objective of our work is to analyze some turbulent descriptors which reflect the mixing ...
    • 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
      Open Access
      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)
      Part of book or chapter of book
      Restricted access - publisher's policy
    • 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 ...
    • 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
      Open Access
      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 ...
    • On the entrainment coefficient in a forced plume: quantitative effects of source parameter 

      Matulka, Anna Magdalena; Lopez Gonzalez-Nieto, Pilar; Redondo Apraiz, José Manuel; Tarquis Alfonso, Ana Maria (University of Thechnology and Agriculture Nicholas Copernicus University, 2014-02-24)
      Article
      Open Access
      The behavior of a forced plume is mainly controlled by the source buoyancy and momentum fluxes and the efficiency of turbulent mixing between the plume and the ambient fluid (stratified or not). The interaction between the ...
    • Percolation experiments in complex fractal media 

      Redondo Apraiz, José Manuel; Tarquis, Ana Maria; Cherubini, Claudia; Lopez Gonzalez-Nieto, Pilar; Vila, Teresa (2013)
      Conference report
      Open Access
    • 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, ...
    • SAR measurements of coastal features in the NW Mediterranean 

      Redondo Apraiz, José Manuel; Martínez Benjamín, Juan José; Díez Rilova, Margarita; Lopez Gonzalez-Nieto, Pilar (2013)
      Conference report
      Open Access
    • The role of initial conditions on mixing efficiency for convective flows 

      Lopez Gonzalez-Nieto, Pilar; Yagüe, Carlos; Cano Marchante, Jose Leandro; Redondo Apraiz, José Manuel (2004-07-24)
      Conference report
      Restricted access - publisher's policy
      Mixing produced in convective flows is investigated comparing three different experiments performed by the authors using brine and fresh water as the two mixing fluids. The initial instabilities are generated by gravitational ...
    • Thermocapilarity and radiative heat flux oscillations 

      Redondo Apraiz, José Manuel; Lopez Gonzalez-Nieto, Pilar; Mahjoub, Otman; Ryazantsev, Yuri S.; Garcia Velarde, Manuel (2014)
      Conference report
      Open Access
      We present a detailled experimental study of the thermocapillary motion of an aniline drop in an stably stratified fluid sytem driven by a laser beam. The thermocapillary motion of drops is the result of the temperature ...