Now showing items 1-8 of 8

    • Bubble dynamics in turbulent duct flows: Lattice-Boltzmann simulations and drop tower experiments 

      Bitlloch, Pau; Ruiz Martí, Xavier; Ramírez de la Piscina Millán, Laureano; Casademunt Viader, Jaume (2018-06-23)
      Article
      Open Access
      Lattice-Boltzmann simulations of a turbulent duct flow have been carried out to obtain trajectories of passive tracers in the conditions of a series of microgravity experiments of turbulent bubble suspensions. The statistics ...
    • Controlled generation of vapor/liquid slug flows by local boiling in microgravity 

      Bitlloch, Pau; Ruiz Martí, Xavier; Ramírez de la Piscina Millán, Laureano; Casademunt Viader, Jaume (2020-09-01)
      Article
      Open Access
      We design, construct, and test a device for controlled boiling by means of local vapor bubble formation in a cavity that injects vapor bubbles in a capillary crossflow. The outcome of the device is a regular slug flow of ...
    • Experimental study of a microchannel bubble injector for microgravity applications 

      Arias Calderón, Santiago; Ruiz, X; Casademunt Viader, Jaume; Ramírez de la Piscina Millán, Laureano; González Cinca, Ricardo (2009-01)
      Article
      Restricted access - publisher's policy
      We perform a quantitative characterization of a microbubble injector in conditions relevant to microgravity. The injector pregenerates a slug flow by using a capillary T-junction, whose operation is robust to changes in ...
    • Generation and control of monodisperse bubble suspensions in microgravity 

      Bitlloch, Pau; Ruiz Martí, Xavier; Ramírez de la Piscina Millán, Laureano; Casademunt Viader, Jaume (2018-06-01)
      Article
      Open Access
      A new experimental setup for the generation of homogeneous, monodisperse bubble suspensions in turbulent duct flows in microgravity has been designed and tested in drop tower experiments. The setup provides independent ...
    • Heat diffusion anisotropy in dendritic growth: phase field simulations and experiments in liquid crystals 

      González Cinca, Ricardo; Ramírez de la Piscina Millán, Laureano; Casademunt Viader, Jaume; Hernández Machado, Aurora; Toth-Katona, T; Börzsönyi, T; Buka, A (1998-10)
      Article
      Restricted access - publisher's policy
      An anisotropic heat diffusion coefficient is introduced in order to study some interfacial growth phenomena. This anisotropy has been incorporated in a phase field model which has been studied numerically to reproduce some ...
    • Pattern forming instabilities of the nematic smectic-B interface 

      Toth-Katona, T; Börzsönyi, T; Buka, A; González Cinca, Ricardo; Ramírez de la Piscina Millán, Laureano; Casademunt Viader, Jaume; Hernández-Manchado, A; Kramer, L (2000-10)
      Article
      Restricted access - publisher's policy
      Free growth properties of the smectic B liquid crystalline phase into the supercooled nematic have been investigated in quasi-two-dimensional geometry. Different orientation combinations of the two phases have been achieved ...
    • The role of connectivity and noise in the emergence of spontaneous activity in cultured neuronal networks 

      Gomez Orlandi, Javier; Álvarez Lacalle, Enrique; Teller Amado, Sara; Casademunt Viader, Jaume; Soriano Fradera, Jordi (2012-10)
      Article
      Open Access
      Cultured neurons in vitro quickly connect to one another to establish a spontaneously active network within a week. The resulting neuronal network is char- acterized by a combination of excitatory ...
    • Turbulent bubble jets in microgravity : spatial despersion and velocity fluctuation 

      Bitlloch, Pau; Ruiz Martí, Xavier; Ramírez de la Piscina Millán, Laureano; Casademunt Viader, Jaume (2015-06-01)
      Article
      Open Access
      A detailed statistical analysis of bubble dispersion in turbulent jets based on data from drop tower experiments is presented here. A stochastic model is also introduced in order to capture these statistics to a large ...