Dynamique des Fluides (DynFluid): Recent submissions

Now showing items 232-238 of 297

    • 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 ...
    • 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 ...
    • 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 ...
    • Investigation of the roughness-induced transition: global stability analyses and direct numerical simulations 
      Article dans une revue avec comité de lecture
      CHERUBINI, Stefania; LERICHE, Emmanuel; ccROBINET, Jean-Christophe; ccLOISEAU, Jean-Christophe (Cambridge University Press (CUP), 2014)
      The linear global instability and resulting transition to turbulence induced by an isolated cylindrical roughness element of height h and diameter d immersed within an incompressible boundary layer flow along a flat plate ...
    • Nonlinear control of unsteady finite-amplitude perturbations in the Blasius boundary-layer flow 
      Article dans une revue avec comité de lecture
      CHERUBINI, Stefania; DE PALMA, Pietro; ccROBINET, Jean-Christophe (Cambridge University Press (CUP), 2013)
      The present work provides an optimal control strategy, based on the nonlinear Navier–Stokes equations, aimed at hampering the rapid growth of unsteady finite-amplitude perturbations in a Blasius boundary-layer flow. A ...
    • Étude expérimentale de l’écoulement et de l’interaction entre deux rotors contrarotatifs subsoniques 
      Article dans une revue avec comité de lecture
      NOURI, Hussain; ccBAKIR, Farid; ccRAVELET, Florent (EDP Sciences, 2014)
      Recently, the need for smaller axial‐flow fans with high specific speeds leads to the design of counter‐rotating axial fans. The design of this type of machines, which have promising aerodynamic performances, suffers from ...
    • Optimal perturbations in boundary layer flows over rough surfaces 
      Article dans une revue avec comité de lecture
      CHERUBINI, Stefania; DE TULLIO, Marco; DE PALMA, Pietro; PASCAZIO, Giuseppe (American Society of Mechanical Engineers, 2013)
      This work provides a three-dimensional energy optimization analysis, looking for perturbations inducing the largest energy growth at a finite time in a boundary-layer flow in the presence of roughness elements. The immersed ...