The turbulent boundary layer in a corner

Turbulent flow along the axis of a 90° corner is considered. Experimental measurements of velocities, wall shear stresses and u² , the turbulent normal stress in the streamwise direction, have been made. The data are considered both from the point of view of momentum integral and similarity analyses. A suitable momentum integral equation is easily derived but difficult to use due to the form of the terms which must be measured. Similarity techniques give a series of correlations which describe the flow over a narrow range of Reynolds number for which data are available. There is experimental evidence for secondary currents in this type of flow but their analysis presents considerable difficulty.