Abstract
A computer code predicting the flows through the centrifugal compressor with the radial vaneless diffuser was developed and applied to investigate the detailed flowfields, i.e.,
secondary flows and jet-wake type flow pattern in design and off-design conditions. Various
parameters such as slip factors, aerodynamic blockages, entropy generation and two-zone
modeling which are widely used in design and performance prediction, were discussed.A control volume method based on a general curvilinear coordinate system was used to
solve the time-averaged Navier–Stokes equations and SIMPLER algorithm was used
to solve the pressure linked continuity equation. The standard