Dynamique des Fluides (DynFluid): Recent submissions

Now showing items 232-238 of 295

    • Cavitation regime detection through Proper Orthogonal Decomposition: dynamics analysis of the sheet cavity on a grooved convergent-divergent nozzle 
      Article dans une revue avec comité de lecture
      DANLOS, Amélie; ccRAVELET, Florent; ccCOUTIER-DELGOSHA, Olivier; ccBAKIR, Farid (Elsevier, 2014)
      The unsteady character of the sheet cavity dynamics on the suction side of hydrofoils, on convergent–divergent nozzles or on blades in turbines and propellers is responsible for many issues like erosion, noise and vibrations. ...
    • Study of the cavitating instability on a grooved Venturi profile 
      Article dans une revue avec comité de lecture
      DANLOS, Amélie; MÉHAL, Jean-Elie; ccRAVELET, Florent; ccCOUTIER-DELGOSHA, Olivier; ccBAKIR, Farid (American Society of Mechanical Engineers, 2014)
      Instabilities of a partial cavity developed on a hydrofoil, a converging-diverging step, or in an interblade channel have already been investigated in many previous works. The aim of this study is to evaluate a passive ...
    • A domain decomposition matrix-free method for global linear stability 
      Article dans une revue avec comité de lecture
      ALIZARD, Frédéric; ccROBINET, Jean-Christophe; ccGLOERFELT, Xavier (Elsevier, 2012)
      This work is dedicated to the presentation of a matrix-free method for global linear stability analysis in geometries composed of multi-connected rectangular subdomains. An Arnoldi technique using snapshots in subdomains ...
    • Multi-Size-Mesh, Multi-Time-Step Algorithm for Noise Computation on Curvilinear Meshes 
      Article dans une revue avec comité de lecture
      LE GARREC, Thomas; CORRE, Christophe; ccGLOERFELT, Xavier (Wiley, 2013)
      Aeroacoustic problems are often multi-scale and a zonal refinement technique is thus desirable to reduce computational effort while preserving low dissipation and low dispersion errors from the numerical scheme. For that ...
    • Global and Koopman modes analysis of sound generation in mixing layers 
      Article dans une revue avec comité de lecture
      SONG, Ge; ALIZARD, Frédéric; ccROBINET, Jean-Christophe; ccGLOERFELT, Xavier (American Institute of Physics, 2013)
      It is now well established that linear and nonlinear instability waves play a significant role in the noise generation process for a wide variety of shear flows such as jets or mixing layers. In that context, the problem ...
    • Comparison of Subgrid-scale Viscosity Models and Selective Filtering Strategy for Large-eddy Simulations 
      Article dans une revue avec comité de lecture
      AUBARD, Guillaume; STEFANIN VOLPIANI, Pedro; ccROBINET, Jean-Christophe; ccGLOERFELT, Xavier (Springer Verlag (Germany), 2013)
      Explicitly filtered large-eddy simulations (LES), combining high-accuracy schemes with the use of a selective filtering without adding an explicit subgrid-scales (SGS) model, are carried out for the Taylor-Green-vortex and ...
    • Determination of wind turbine far wake using actuator disk 
      Communication avec acte
      AMER, Rodeyna; DOBREV, Ivan; MASSOUH, Fawaz (2014)
      The growth in size of wind turbines over the last years is significant. The rotor diameter becomes somehow comparable to atmospheric boundary layer at the land surface. In this case the assumption of uniform velocity of ...