Dynamique des Fluides (DynFluid): Soumissions récentes

Voici les éléments 155-161 de 297

    • Development and analysis of high-order vorticity confinement schemes 
      Article dans une revue avec comité de lecture
      PETROPOULOS, I.; COSTES, M.; CINNELLA, Paola (ELSEVIER, 2017)
      High-order extensions of the Vorticity Confinement (VC) method are developed for the accurate com- putation of vortical flows, following the VC2 conservative formulation of Steinhoff. First, a high-order formulation of VC ...
    • Invariant solutions in a channel flow using a minimal restricted nonlinear model 
      Article dans une revue avec comité de lecture
      ALIZARD, Frédéric (Elsevier Masson, 2017)
      Simulations using a Restricted Nonlinear (RNL) system, where mean flow distortion resulting from Reynolds stress feedback regenerates rolls, is applied in a channel flow under subcritical conditions. This quasi-linear ...
    • Influence of the Shape on the Roughness-Induced Transition 
      Ouvrage scientifique
      CHERUBINI, Stefania; LERICHE, Emmanuel; ccROBINET, Jean-Christophe; ccLOISEAU, Jean-Christophe (Springer, 2015)
      lobal instability analysis of the three-dimensional flow past two rough- ness elements of different shape, namely a cylinder and a bump, is presented. In both cases, the eigenspectrum is made of modes characterised by a ...
    • Optimal perturbation for two-dimensional vortex systems: route to non-axisymmetric state 
      Article dans une revue avec comité de lecture
      NAVROSE; JOHNSON, Author H. G.; BRION, Véronique; JACQUIN, Laurent; ccROBINET, Jean-Christophe (Cambridge University Press (CUP), 2018)
      We investigate perturbations that maximize the gain of disturbance energy in a two-dimensional isolated vortex and a counter-rotating vortex pair. The optimization is carried out using the method of Lagrange multipliers. ...
    • Experimental investigation of an actively controlled automotive cooling fan using steady air injection in the leakage gap 
      Article dans une revue avec comité de lecture
      AZZAM, Tarik; PARIDAENS, Richard; OUALLI, Hamid; ccRAVELET, Florent; ccBAKIR, Farid; ccKHELLADI, Sofiane (SAGE Publications, 2017)
      In an axial fan, a leakage flow driven by a pressure gradient between the pressure side and the suction side occurs in the gap between the shroud and the casing. This leakage flow is in the opposite direction to the main ...
    • An unexpected balance between outer Rayleigh streaming sources 
      Article dans une revue avec comité de lecture
      BALTEAN-CARLÈS, Diana; WEISMAN, Catherine; TABAKOVA, S.; BAILLIET, Hélène; ccDARU, Virginie (Cambridge University Press (CUP), 2019)
      Acoustic streaming generated by a plane standing wave between two infinite plates or inside a cylindrical tube is considered, under the isentropic flow assumption. A two-dimensional analysis is performed in the linear case ...
    • Space–time dynamics of optimal wavepackets for streaks in a channel entrance flow 
      Article dans une revue avec comité de lecture
      ALIZARD, Frédéric; CADIOU, A.; LE PENVEN, L.; DI PIERRO, B.; BUFFAT, M. (Cambridge University Press (CUP), 2018)
      The laminar–turbulent transition of a plane channel entrance flow is revisited using global linear optimization analyses and direct numerical simulations. The investigated case corresponds to uniform upstream velocity ...