Giorgio Krstulovic

Mar 22, 2024 | link.aps.org | Giorgio Krstulovic |Université Côte d'Azur |Laboratoire Lagrange |Bd de l'Observatoire

In this paper, we study numerically the temporal evolution of an initially random large-scale velocity field governed by the hyperviscous incompressible Navier-Stoke equations. Three stages are clearly observed during the evolution. First, the initial condition development is characterized by a spectrum evolving in a self-similar way with a wave number front k*(t) propagating toward high values exponentially in time.