Abstract

A direct integral method is presented for the calculation of incompressible turbulent three-dimensional boundary layers in axisymmetric walls. An inviscid throughflow program was combined with the boundary-layer calculation method to predict swirling flows in annular diffusers. Comparison between theoretical and experimental results indicates that predictions can be made in a great variety of boundary-layer flows with interest in turbomachinery. A design criterion based on boundary-layer development was used to compute the wall shape of axisymmetric diffusers.

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