A STUDY OF THE 3-DIMENSIONAL INTERACTION OF WAKES AND BOUNDARY-LAYERS

This paper concerns the study of the three-dimensional interaction of a slat wake and a wing boundary layer, as commonly occurs on the sucti on surface of a high-lift multi-element aerofoil. The experimental tes t case has a realistic slat-wing flow configuration under infinite swe pt wing conditions. This enables the effect of the cross flow induced by the wing sweep on the slat wake and the wing boundary layer interac tion process to be investigated. A triple hot-wire system has been use d to measure the mean velocity and Reynolds stress components in the f low field. The measurements are used to validate a three-dimensional b oundary layer code, which has been modified to calculate this three-di mensional wake-boundary layer mixing flow.