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 k − ε turbulence model was used to obtain the eddy viscosity. Performance of the code was verified using the measured data for the Eckardt impeller.
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