Dynamique des Fluides (DynFluid): Recent submissions

Now showing items 36-42 of 291

    • An empirical mean-field model of symmetry-breaking in a turbulent wake 
      Article dans une revue avec comité de lecture
      CALLAHAM, Jared L.; RIGAS, Georgios; ccLOISEAU, Jean-Christophe; BRUNTON, Steven L. (2022-05-11)
      Improved turbulence modeling remains a major open problem in mathematical physics. Turbulence is notoriously challenging, in part due to its multiscale nature and the fact that large-scale coherent structures cannot be ...
    • Study on the Resolution of Large-Eddy Simulations for Supersonic Jet Flows 
      Conférence invitée
      JUNQUEIRA-JUNIOR, Carlos; F. ABREU, Diego; T. V. DAURICIO, Eron; F. AZEVEDO, João Luiz (AIAA, 2022-06)
      The present study is concerned with large-eddy simulations (LES) of supersonic jet flows. The work addresses, in particular, the simulation of a perfectly expanded free jet flow with an exit Mach number of 1.4 and an exit ...
    • Comparison of Shock-Boundary Layer Interactions in Adiabatic and Isothermal Supersonic Turbine Cascades 
      Conférence invitée
      JUNQUEIRA-JUNIOR, Carlos; R. WOLF, William; F. S. LUI, Hugo; R. RICCIARDI, Tulio (AIAA, 2022-06)
      Wall-resolved large eddy simulations are employed to investigate the shock-boundary layer interactions (SBLIs) in a supersonic turbine cascade. An analysis of the suction side separation bubbles forming due to the SBLIs ...
    • A comparison of low and high-order methods for the simulation of supersonic jet flows 
      Conférence invitée
      F. ABREU, Diego; T. V. DAURICIO, Eron; F. AZEVEDO, João Luiz; JUNQUEIRA-JUNIOR, Carlos (ABCM, 2021-11)
      The present work compares results for different numerical methods in search of alternatives to improve the quality of large-eddy simulations for the problem of a supersonic turbulent jet flows. Previous work has analyzed ...
    • Low-frequency resolvent analysis of the laminar oblique shock wave/boundary layer interaction 
      Article dans une revue avec comité de lecture
      BUGEAT, Benjamin; CHASSAING, Jean-Camille; SAGAUT, Pierre; ccROBINET, Jean-Christophe (Cambridge University Press (CUP), 2022-04)
      Resolvent analysis is used to study the low-frequency behaviour of the laminar oblique shock wave/boundary layer interaction (SWBLI). It is shown that the computed optimal gain, which can be seen as a transfer function of ...
    • Continuing invariant solutions towards the turbulent flow 
      Article dans une revue avec comité de lecture
      PARENTE, Enza; FARANO, Mirko; DE PALMA, Pietro; CHERUBINI, Stefania; ccROBINET, Jean-Christophe (The Royal Society Publishing, 2022-05)
      A new mathematical framework is proposed for characterizing the coherent motion of fluctuations around a mean turbulent channel flow. We search for statistically invariant coherent solutions of the unsteady Reynolds-averaged ...
    • Thermochemical non-equilibrium effects in turbulent hypersonic boundary layers 
      Article dans une revue avec comité de lecture
      PASSIATORE, Donatella; CINNELLA, Paola; GIUSEPPE, Pascazio; ccSCIACOVELLI, Luca (2022-04-28)
      A hypersonic, spatially evolving turbulent boundary layer at Mach 12.48 with a cooled wall is analysed by means of direct numerical simulations. At the selected conditions, massive kinetic-to-internal energy conversion ...