Accession Number : ADP003085

Title :   End-Wall Boundary Layer Calculations in Multistage Axial Compressors,

Corporate Author : VRIJE UNIVERSITEIT BRUSSEL (BELGIUM) DEPT OF FLUID MECHANICS

Personal Author(s) : Ruyck,J. de ; Hirsch,Ch.

Report Date : SEP 1983

Pagination or Media Count : 16

Abstract : A previously developed theory for the calculation of a three-dimensional boundary layer along any curved axisymmetric wall surface is summarized. In addition, new defect force correlations taken into account the interactions between blades and end-wall boundary layer flows, in particular tip clearance effects, relative motion and secondary losses are included. Velocity profiles are reconstructed from the integral boundary layer thicknesses by use of velocity profile models defined in the meridional and angular directions. The different aspects of the theory are tested systematically on various configurations. It is shown that the overall behaviour of axial compressor boundary layers can be simulated with the present method and that the defect force correlations are able to simulate all the secondary flow effects. (Author)

Descriptors :   *Boundary layer flow, *Axial flow compressor blades, *Secondary flow, Three dimensional flow, Walls, Axial flow compressors, Clearances, Losses, Velocity, Profiles, Integral equations, Mathematical prediction, Thickness, Belgium

Distribution Statement : APPROVED FOR PUBLIC RELEASE