Dynamique des Fluides (DynFluid): Soumissions récentes

Voici les éléments 57-63 de 297

    • Influence of freestream turbulence on the flow over a wall roughness 
      Article dans une revue avec comité de lecture
      BUCCI, Michele Alessandro; CHERUBINI, Stefania; ccROBINET, Jean-Christophe; ccLOISEAU, Jean-Christophe (American Physical Society (APS), 2021)
      The effect of freestream turbulence on the dynamics of an incompressible flow past a cylindrical roughness element in subcritical conditions (i.e., for Reynolds numbers below the onset of linear instability) has been ...
    • Global transition dynamics of flow in a lid-driven cubical cavity 
      Article dans une revue avec comité de lecture
      RANJAN, Rajesh; UNNIKRISHNAN, Sasidharan; GAITONDE, Datta; ccROBINET, Jean-Christophe (Springer Science and Business Media LLC, 2021)
      The dynamics of a fully three-dimensional lid-driven cubical cavity (3D-LDC) flow at several postcritical conditions, i.e., beyond the first bifurcation, are elucidated using both linear and nonlinear analyses. When the ...
    • Restricted nonlinear model for high- and low-drag events in plane channel flow 
      Article dans une revue avec comité de lecture
      ALIZARD, Frédéric; ccBIAU, Damien (Cambridge University Press (CUP), 2019)
      A restricted nonlinear (RNL) model, obtained by partitioning the state variables into streamwise-averaged quantities and superimposed perturbations, is used in order to track the exact coherent state in plane channel flow ...
    • 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 ...
    • 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 ...
    • Bifurcation analysis and frequency prediction in shear-driven cavity flow 
      Article dans une revue avec comité de lecture
      BENGANA, Y.; TUCKERMAN, L. S.; ccROBINET, Jean-Christophe; ccLOISEAU, Jean-Christophe (Cambridge University Press (CUP), 2019)
      A comprehensive study of the two-dimensional incompressible shear-driven flow in an open square cavity is carried out. Two successive bifurcations lead to two limit cycles with different frequencies and different numbers ...
    • 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. ...