Performance prediction of centrifugal compressor based on a new volute loss model and corrected theoretical work

Abstract Performance prediction plays an important role in the predesign stage of centrifugal compressors. A set loss models is usually selected and grouped to fulfill above prediction. To improve defects traditional prediction, we modified outlet velocity slip coefficient impeller by means energy average method obtain theoretical work. new volute model proposed replace semiempirical adopting a suitable for each flow passage component. proper performance established compressor studied this paper. The overall single‐stage predicted compared with experimental numerical simulation results. It found that can better predict compressor. And third largest after loss.