Laboratoire des Écoulements Géophysiques et Industriels

Nos tutelles


Nos partenaires


Accueil > Équipes > Équipe MEIGE > Diffusion scientifique > Séminaires internes

Part 2. Statiscal mechanics of 2D flows

Joel Sommeria, 08/03/2012

2D turbulence is naturally defined as a turbulent flow depending only on two space coordinates x,y or qlternqtively qs flow confined to a surface (which does not need to be plane, for instance a sphere). In the former case, there is a possibly non-zero third velocity component uz, along the z direction, but independent of z. Then the equation of motion states that this velocity component is passively transported (like the concentration of a chemical) by the flow ux, uy in the plane, so this third velocity component can be ignored in the theoretical description.