Asymptotic analysis of thick axisymmetric turbulent boundary layers

Abstract

Attention is given to the similarity laws governing the axisymmetric turbulent boundary layer for the case of constant pressure flow at velocity U past a circular cylinder whose axis is aligned with the flow. It is noted that at large values of the boundary layer thickness (delta)/cylinder radius (a) ratio, an axisymmetric turbulent layer experiences a surface shear force that is approximately (a/delta) times the force which sustains a two-dimensional boundary layer of the same thickness.