A Practical Method of Predicting Transonic-Compressor Performance

Abstract

A real fluid-stream filament axial-flow-compressor performance method is deduced from theory and statistics. The nonisentropic complete radial equilibrium-momentum equation is combined with the continuity, energy, and flow-process equations to yield a group of equations which is readily adaptable to solution on a digital computer. The real fluid effects, such as subsonic viscous losses and shocks at cascade entry, are deduced from statistics in terms of a blade-loading parameter. A program suitable for rapid calculations on a digital computer is presented in schematic form. A comparison between the deduced and the measured performances of an arbitrary stage is made. The correlation obtained indicates that the performance method is reliable.