Determination of the transitional Reynolds number in a plane Couette flow through study of relaminarization.

Authors: Komminaho, J., Lundbladh, A., Johansson, A.V.J.
Document Type: Conference
Pubstate: Published
Journal: Proc, the AFSOR International Conference on DNS/LES, Ruston, Louisiana
Volume:    233-240
Year: 1997


By numerical simulation of relaminarization we have determined the transition Reynolds number of plane Couette flow in a manner that complements earlier studies. The approach adopted here was to start with a fully developed turbulent state and then decrease the Reynolds number until the turbulence vanished. We used a computational domain of two different sizes, and found that it must be very large in order to avoid artificial effects of the periodic boundary condition. It was hereby possible to establish, in accordance with recent transition studies, that the transitional Reynolds number in plane Couette flow is between 350 and 375, based on half the velocity difference and half the distance between the two surfaces.