Dynamique des Fluides (DynFluid): Recent submissions

Now showing items 260-266 of 297

    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Influence de la répartition de la charge sur les performances d'une turbomachine axiale contrarotative 
      Communication avec acte
      WANG, Juan; ccRAVELET, Florent; ccSARRAF, Christophe; ccBAKIR, Farid (2013)
      Due to high requirements of energy consumption level, weight and dimension restriction in many industrial fields, compact axial turbomachines are expected. Counter-rotating axial-flow fans may be a solution. The design and ...
    • 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 ...