Transition in a Separated Laminar Boundary Layer

PROGRESS in understanding the mechanism of transition from laminar to turbulent flow in a boundary layer has been largely confined to flow along a flat plate. The present investigation is concerned with transition in a separated laminar boundary layer. A hot wire investigation of flow near the short leading-edge bubble on a RAE-103 airfoil section led to a study of a boundary-layer transition in the flow past a step. The step investigation represented airfoil bubble conditions approximately and to a larger scale.