Effects of streamline curvature on the law of the wall

It is shown that, if the mixing-length model is used to describe the shear stress in the fully turbulent region of a shear flow, then a streamline curvature correction for the mixing length as that proposed by So (1975) is sufficient to describe the experimentally observed departure of the velocity distribution from the logarithmic law of the wall. The validity of the curvature correction is demonstrated by comparing the present result with available fully developed curved and rotating channel flow data. As a result, the use of Clauser plots to determine friction velocity in curved shear flows is shown to be correct.