The spanwise perturbation of two-dimensional boundary layers
- 1 January 1966
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics
- Vol. 24 (1) , 153-164
- https://doi.org/10.1017/s0022112066000557
Abstract
Large spanwise variations of boundary-layer thickness and surface shear have been found recently in wind tunnels designed to maintain two-dimensional flow. Bradshaw (1965) argues that these variations are caused by minute deflexions in the free-stream flow rather than by any intrinsic instability of the boundary layers. This paper is a study of the effect of a small, periodic transverse flow on a flat-plate boundary layer. The perturbation flow Reynolds number is assumed to be O(1) as it is in the experiments.Keywords
This publication has 1 reference indexed in Scilit:
- The effect of wind-tunnel screens on nominally two-dimensional boundary layersJournal of Fluid Mechanics, 1965