Dynamique des Fluides (DynFluid): Recent submissions

Now showing items 225-231 of 291

    • Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine 
      Article dans une revue avec comité de lecture
      CLENCI, Adrian; BIZIAC, Adrian; PODEVIN, Pierre; DESCOMBES, Georges; NICULESCU, Rodica; ccDELIGANT, Michael (MDPI, 2013)
      Reducing fuel consumption is a prime objective in the automotive industry in order to meet regulatory and customer demands. Variable valve actuation offers many opportunities for improving the spark ignition engine’s ...
    • Influence of Reynolds number and forcing type in a turbulent von Karman flow 
      Article dans une revue avec comité de lecture
      SAINT-MICHEL, Brice; DUBRULLE, Bérengère; MARIÉ, Louis; DAVIAUD, François; ccRAVELET, Florent (Institute of Physics: Open Access Journals, 2014)
      We present a detailed study of a global bifurcation occuring in a turbulent von Kármán swirling flow. In this system, the statistically steady states progressively display hysteretic behaviour when the Reynolds number is ...
    • 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 ...
    • Experimental analysis of the pressure–velocity correlations of external unsteady flow over rocket launchers 
      Article dans une revue avec comité de lecture
      MARIÉ, Simon; DRUAULT, Philippe; LAMBARE, Hadrien; SCHRIJER, Ferry (Elsevier, 2013)
      Based on simultaneous wall pressure and velocity measurements, the aerodynamic load of a launcher body model is investigated. Two different configurations are considered in order to study the influence of geometrical ...
    • Evidence for Forcing-Dependent Steady States in a Turbulent Swirling Flow 
      Article dans une revue avec comité de lecture
      SAINT-MICHEL, Brice; DUBRULLE, Bérengère; MARIÉ, Louis; DAVIAUD, François; ccRAVELET, Florent (American Physical Society, 2013)
      We study the influence on steady turbulent states of the forcing in a von Karman flow, at constant impeller speed, or at constant torque. We find that the different forcing conditions change the nature of the stability of ...
    • On the dynamics and breakup of a bubble immersed in a turbulent flow 
      Article dans une revue avec comité de lecture
      COLIN, Catherine; RISSO, Frédéric; ccRAVELET, Florent (American Institute of Physics, 2011)
      Experimental investigations of the dynamics of a deformable bubble rising in a uniform turbulent flow are reported. The turbulence is characterized by fast PIV. Time-resolved evolutions of bubble translation, rotation and ...
    • Kinematic Alpha Tensors and dynamo mechanisms in a von Karman swirling flow 
      Article dans une revue avec comité de lecture
      DUBRULLE, Bérengère; DAVIAUD, François; RATIÉ, Pierre-Arthur; ccRAVELET, Florent (American Physical Society, 2012)
      We provide experimental and numerical evidence of in-blades vortices in the von Karman swirling flow. We estimate the associated kinematic α-effect tensor and show that it is compatible with recent models of the von Karman ...