Dynamique des Fluides (DynFluid): Recent submissions

Now showing items 246-252 of 295

    • Experimental comparison between a counter-rotating axial-flow fan and a conventional rotor-stator stage 
      Communication avec acte
      WANG, Juan; ccRAVELET, Florent; ccBAKIR, Farid (2013)
      Based on the requirement of energy consumption level and weight and dimension restriction, compact axial machines are highly demanded in many industrial fields. The counter-rotating axial-flow fans could be a promising way ...
    • Study of passive control study of the cavitation instability on a venturi profile 
      Communication avec acte
      DANLOS, Amélie (2012)
      As a source of vibrations, noise, erosion and structure damages, cavitation is a major handicap for many industrial flows used in different domains from propeller or pump studies, to the analysis of hydrodynamic flows ...
    • Etude expé́rimentale du transport hydraulique de grandes particules en conduite horizontale et en forme de S 
      Communication avec acte
      LEMAIRE, Antoine; ccRAVELET, Florent; ccBAKIR, Farid (2011)
      We study the pressure drop and flow regimes for large spheres with respect to the diameter of the pipe (5, 10 and 15%) by differential pressure measurements and visualizations. Two densities are used. The losses are smaller ...
    • 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 ...
    • High Accuracy Volume Flow Rate Measurement Using Vortex Counting 
      Article dans une revue avec comité de lecture
      ZAARAOUI, Abdelkader; MARGNAT, Florent; ccRAVELET, Florent; ccKHELLADI, Sofiane (Elsevier, 2013)
      A prototype device for measuring the volumetric flow-rate by counting vortices has been designed and realized. It consists of a square-section pipe in which are placed a two-dimensional bluff body and a strain gauge force ...
    • Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System 
      Article dans une revue avec comité de lecture
      NOURI, Hussain; ccSARRAF, Christophe; REY, Robert; ccRAVELET, Florent; ccBAKIR, Farid (American Society of Mechanical Engineers, 2012)
      An experimental study on the design of counter-rotating axial-flow fans was carried out. The fans were designed using an inverse method. In particular, the system is designed to have a pure axial discharge flow. The ...
    • 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 ...