抄録
We try to obtain the description on the logarithmic velocity profile in the terms of the numerical exact solutions. Here the plane Couette turbulence with the eddy viscous model is considered. We study bifurcation structure arising from Gentle UPO (Unstable Periodic Orbit) reported by Kawahara and Kida(1) in Navier-Stokes equations. We find that the UPOs in Navier-Stokes system connect to those of LES system and the Gentle UPO is a simple edge state of LES turbulence.
