Experimental and Theoretical Analysis of the Flow in a Centrifugal Compressor Volute

摘要: Detailed measurements of the swirling flow in a centrifugal compressor volute with elliptical cross section are presented. They show important variations swirl and throughflow velocity, total static pressure distribution at different sections diffuser exit. The basic mechanisms defining complex three dimensional structure clarified. sources loss have been investigated used to improve prediction capability one-dimensional mean streamline analysis correlations. tangential model under decelerating conditions friction confirmed. New empirical coefficients proposed for exit cone case accelerating