The Experiment on the Skewed Boundary Layer on a Rotating Body

Abstract

When a body of revolution rotates in an axial stream, skewed boundary layers develop on the body surface. Experiments are carried out on the skewed boundary layers over a body of revolution with streamlined nose. Measured velocity profiles differ a little from the quasi-collateral condition, that is, a velocity component perpendicular to the streamline appears in a layer near the wall with thickness of 1.5 mm. The magnitude of this velocity component is about 5% of the main stream velocity. Measured boundary layer thickness is compared with two theories which use the momentum integral equations. Although there is some difference in the assumed velocity profiles between the theoretical and experimental results, their agreement is fairly good.