Study on Secondary Flows in Annulus Wall Cascades : On Radial Movement of Fluid in Blade Boundary Layers for Stationary Cascades

Abstract

Static blade boundary layers, outlet flow angles and total pressure drop through annular cascades have been measured removing the boundary layers on annulus walls, in order to make clear the effects of an inward radial movement of fluid in the blade boundary layers. The numerical solutions of velocity profiles in laminar and turbulent boundary layers on the blades agreed with experimental data.