At present, off-design centrifugal compressor suffers from great instabilities, such as rotating
stall and surge, which lead to work failure, strong pressure fluctuations, and violent …

Centrifugal compressors are widely used in different fields. Their design requires high
performance and a wide operating range, where, at lower mass flow rates, unstable flow …

Despite its simple geometry, the turbulent flow in vaneless diffusers is asymmetric and highly
skewed. In the present work, a frozen eddy viscosity approach was employed to investigate …

Heightened interest in visualizing the flow structure under critical conditions for aero-engine
led to further understanding of the underlying physical mechanism as well as to a better …

An accurate estimation of rotating stall is one of the key points for high-pressure centrifugal
compressors, as it is often connected with the onset of detrimental subsynchronous …

The stability prediction and unsteady-flow characteristic explanations of centrifugal
compressors mostly focus on radial vaneless diffusers with parallel walls (PWs). However …

In process centrifugal compressors used in various types of plants, the compressor is the
heart of a plant, and it requires high reliability. Therefore, prediction of the surge is important …

Rotating stall is an important unstable flow phenomenon that leads to performance
degradation and limits the stability boundary in centrifugal compressors. The volute is one of …

This paper describes the vaneless diffuser rotating stall (VDRS) development and cell-
merging phenomena. A centrifugal compressor's lifespan may be limited by flow instabilities …

Centrifugal compressor efficiency is the key to increasing incomes from its operation. There
are several flow instabilities which can negatively affect a compressor, one of them being the …