Dynamique des Fluides (DynFluid): Recent submissions

Now showing items 253-259 of 295

    • Experimental and numerical study of flow around a wind turbine rotor 
      Article dans une revue avec comité de lecture
      DOBREV, Ivan; MASSOUH, Fawaz; MEMON, Asif (InderScience, 2013)
      An improved model of an actuator surface is proposed, representing the flow around a wind turbine. This model was developed in conjunction with a Navier-Stokes solver using a blade element method for the calculation of ...
    • Fast acoustic streaming in standing waves : Generation of an additional outer streaming cell 
      Article dans une revue avec comité de lecture
      REYT, Ida; BAILLIET, Hélène; MOREAU, Solène; VALIERE, Jean-Christophe; BALTEAN-CARLÈS, Diana; WEISMAN, Catherine; ccDARU, Virginie (Acoustical Society of America, 2013)
      Rayleigh streaming in a cylindrical acoustic standing waveguide is studied both experimentally and numerically for nonlinear Reynolds numbers from 1 to 30. Streaming velocity is measured by means of laser Doppler velocimetry ...
    • Numerical Study of the Effect of Freestream Turbulence on by-pass Transition in a Boundary Layer 
      Article dans une revue avec comité de lecture
      CHERUBINI, Stefania; DE PALMA, Pietro; ccROBINET, Jean-Christophe (Elsevier, 2014)
      We use direct numerical simulations in the presence of free-stream turbulence having different values of intensity, T u, and integral length scale, L, in order to determine which kind of structures are involved in the path ...
    • Minimal perturbations approaching the edge of chaos in a Couette flow 
      Article dans une revue avec comité de lecture
      CHERUBINI, Stefania; DE PALMA, Pietro (IOP Publishing, 2014)
      This paper provides an investigation of the structure of the stable manifold of the lower branch steady state for the plane Couette flow. Minimal energy perturbations to the laminar state are computed, which approach within ...
    • Impact of Thermal Aging on the Microstructure Evolution and Mechanical Properties of Lanthanum-Doped Tin-Silver-Copper Lead-Free Solders 
      Article dans une revue avec comité de lecture
      SADIQ, Muhammad; CHERKAOUI, Mohammed; ccPESCI, Raphaël (Institute of Electrical and Electronics Engineers, 2013)
      An extensive study is made to analyze the impact of pure lanthanum on the microstructure and mechanical properties of Sn-Ag-Cu (SAC) alloys at high temperatures. Different compositions are tested; the temperature applied ...
    • Turbulent boundary layer noise : direct radiation at Mach number 0.5 
      Article dans une revue avec comité de lecture
      BERLAND, Julien; ccGLOERFELT, Xavier (Cambridge University Press (CUP), 2013)
      Boundary layers constitute a fundamental source of aerodynamic noise. A turbulent boundary layer over a plane wall can provide an indirect contribution to the noise by exciting the structure, and a direct noise contribution. ...
    • 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 ...