Spanwise Mixing in Multistage Axial Flow Compressors: Part II—Throughflow Calculations Including Mixing

[+] Author and Article Information
S. J. Gallimore

Rolls-Royce Limited, Derby, England

J. Turbomach 108(1), 10-16 (Jul 01, 1986) (7 pages) doi:10.1115/1.3262009 History: Received December 26, 1985; Online November 09, 2009


The important influence of spanwise mixing on the flow through multistage axial compressors has been investigated by incorporating the effect into an axisymmetric streamline curvature throughflow program. The mixing was modeled as a turbulent diffusion process based on the experimental observations reported in Part I of this paper, which showed that this was the dominant physical mechanism. The inclusion of the mixing was found to be crucial in accurately predicting spanwise variations of exit total temperature in multistage machines. The effect of mixing on loss distributions inferred from measurements was found to be significant so that upstream loss sources could only be determined from downstream distributions when the effect of mixing was included.

Copyright © 1986 by ASME
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