Aquesta línia de recerca té com a objectiu estudiar la dinàmica de règims preturbulents o de turbulència plenament desenvolupada. Per extensió, s'estudien problemes associats amb la dinàmica no lineal d'ones, sistemes complexos, formació d'estructures dissipatives (patterns), etc. La major part dels problemes objecte d'estudi corresponen a sistemes d'interès geofísic o de recerca bàsica, és a dir, oceanografia, dinàmica atmosfèrica, dinàmica mediambiental, però també són objecte d'estudi alguns models matemàtics d'interès físic o biològic susceptibles de propagar ones, fronts, polsos, defectes, etc. Com a exemple de problemes en estudi podem esmentar la convecció tèrmica, la turbulència en fluids estratificats, els sistemes en rotació, la dinàmica de mescles, l'arrossegament de sediments, els corrents de gravetat, etc. Quant a les tècniques que s'utilitzen, en el camp de la teoria es combina la simulació numèrica directa de processos amb tècniques analítiques de reducció a formes normals, equacions d'amplitud, dinàmica caòtica, etc. En el terreny experimental, la tècnica més emprada és el tractament digital d'imatges de fluxos obtinguts en experiments de laboratori.

Pàgina web del grup de recerca

Enviaments recents

  • Nonsingular black holes, the cosmological constant, and asymptotic safety 

    Torres Herrera, Ramon (2017-07-15)
    Article
    Accés obert
    Quantum gravitational effects in black hole spacetimes with a cosmological constant ¿ are considered. The effective quantum spacetimes for the black holes are constructed by taking into account the renormalization group ...
  • Meteodiversity: a new concept for quantifying meteorological diversity 

    Mazón Bueso, Jordi; Pino González, David (Wiley-Blackwell, 2017-05-10)
    Article
    Accés restringit per política de l'editorial
    Inspired by the concept of biodiversity used by biologists and ecologists, the concept of meteodiversity is proposed as a method of characterising the variety of meteorological phenomena in a defined area within a specified ...
  • Self-organized kilometer-scale shoreline sand wave generation: sensitivity to model and physical parameters 

    Idier, Déborah; Falqués Serra, Albert; Rohmer, Jérémy; Arriaga García, Jaime Alonso (2017-09-19)
    Article
    Accés obert
    The instability mechanisms for self-organized kilometer-scale shoreline sand waves have been extensively explored by modeling. However, while the assumed bathymetric perturbation associated with the sand wave controls the ...
  • Hydrological and sedimentary analysis of two recent flash floods in a Mediterranean basin with major changes in land uses and channel shape (Sió River, NE Iberian Peninsula) 

    Balasch Solanes, Josep Carles; García-Rodríguez, David; Tuset Mestre, Jordi; Ruiz Bellet, Josep Lluís; Rodríguez-Ochoa, Rafael; Jacquet, Eisharc; Barriendos Valve, Mariano; Castelltort Aiguabella, Xavier; Pino González, David (2017)
    Comunicació de congrés
    Accés obert
    Two important rain events occurred in November 2015 and November 2016 in the Sió River basin (150 km2), a small tributary of the Segre River, within the Ebro River basin (NE Iberian Peninsula), caused two considerable flash ...
  • Modeling the long-term diffusion and feeding capability of a mega-nourishment 

    Arriaga García, Jaime Alonso; Rutten, Jantien; Ribas Prats, Francesca; Falqués Serra, Albert; Ruessink, Gerben (2017-03-01)
    Article
    Accés restringit per política de l'editorial
    A morphodynamic model based on the wave-driven alongshore sediment transport, including cross-shore transport in a simplified way and neglecting tides, is presented and applied to the Zandniotor mega-nourishment on the ...
  • Parametric analysis of active flow control using steady suction and steady blowing 

    Prakash, Bhanu; Mellibovsky Elstein, Fernando; Bergadà Granyó, Josep Maria (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Active Flow Control is implemented over NACA 2412 airfoil using Steady Suctionand Steady Blowing techniques. The pre-stall angle of attack (AOA) 12 0 is studied at a high Reynolds number (Re chord ) of 3.1*10 6 for ...
  • NACA 2412 performance modification via using AFC 

    Summ, Thorsten; Prakash, Bhanu; Bergadà Granyó, Josep Maria; Wierschem, Andreas; Mellibovsky Elstein, Fernando (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The NACA 2412 profile was numerically studied via employing 2D-DNS and implementing Active Flow Control (AFC), the Reynolds number considered was 6757, being the angle of attack of 8º. Initially, the basic flow without ...
  • Nonsingular black holes, the cosmological constant and asymptotic safety 

    Torres Herrera, Ramon (2017-06-05)
    Article
    Accés obert
    Quantum gravitational effects in black hole spacetimes with a cosmological constant ¿ are considered. The effective quantum spacetimes for the black holes are constructed by taking into account the renormalization group ...
  • Non-singular quantum improved rotating black holes and their maximal extension 

    Torres Herrera, Ramon (2017-06-01)
    Article
    Accés restringit per política de l'editorial
    We add a prescription to the Newman–Janis algorithm in order to use it as a means of finding new extended rotating black hole spacetimes from static spherically symmetric ones. Then, we apply the procedure to a quantum ...
  • Formation mechanisms for self-organized kilometer-scale shoreline sand waves 

    Falqués Serra, Albert; Ribas Prats, Francesca; Idier, Déborah; Arriaga García, Jaime Alonso (2017-05-16)
    Article
    Accés obert
    The feedbacks between morphology and waves through sediment transport are investigated as a source of kilometer-scale shoreline sand waves. In particular, the observed sand waves along Srd. Holmslands Tange, Denmark, are ...

Mostra'n més