DNS of a turbulent boundary layer with separation and reattachment

analysis of unsteady behavior

Abstract

Direct numerical simulations (DNSs) are used to analyze a flat-plate turbulent boundary layer with separation and reattachment. In the present study, particular attention is given to unsteady low-frequency motion observed in the pressured induced separation bubble for Reθ=900 where Reθ is the Reynolds number based on the inlet momentum thickness and freestream velocity.