Application of Through-Flow Calculation to Design and Performance Prediction of Centrifugal Compressor

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.

Keywords

• Centrifugal compressor
• Three-dimensional analysis
• k-ε model
• Secondary flows
• Jet-wake flow
• Performance prediction.