Abstract: This paper summarizes the main results sorted out from a design of experiment (DoE) based on a validated computational fluid dynamics (CFD). Several tip recessed geometries applied to an unshrouded impeller were considered ...

Abstract: An accurate estimation of rotating stall is one of the key points for highpressure centrifugal compressors, as it is often connected with the onset of detrimental subsynchronous vibrations which can prevent the machine ...

Abstract: A simplified onedimensional model for the performance estimation of vaneless radial diffusers is presented. The starting point of such a model is that angular momentum losses occurring in vaneless diffusers are usually ...