Dynamique des Fluides (DynFluid): Soumissions récentes

Voici les éléments 267-273 de 295

    • 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 ...
    • Investigation of wind turbine flow and wake 
      Article dans une revue avec comité de lecture
      MASSOUH, Fawaz; DOBREV, Ivan (2014)
      This paper is dedicated to the investigation and analysis of wind turbine wake. An experimental work is undertaken in wind tunnel on a horizontal axis wind turbine model. The velocity field in the wake is measured using ...
    • Transient growth in the flow past a three-dimensional smooth roughness element 
      Article dans une revue avec comité de lecture
      CHERUBINI, Stefania; DE TULLIO, Marco; DE PALMA, Pietro; PASCAZIO, Giuseppe (Cambridge University Press (CUP), 2013)
      This work provides a global optimization analysis, looking for perturbations inducing the largest energy growth at a finite time in a boundary-layer flow in the presence of smooth three-dimensional roughness elements. ...
    • 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 ...
    • 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 ...
    • 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 ...