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 …

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 …

Unstable flow structures cause inevitable energy losses in all power energy systems,
including turbomachines. In this study, a set of analyses was conducted with the use of …

Centrifugal compressors employed in the oil and gas industry are operated at high gas
pressure conditions and are used in a wide operation range. Accurate prediction of the …

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 …

The influence of four different vaneless diffuser shapes on the performance of centrifugal
compressors is numerically studied in this paper. One of the studied shapes was a parallel …

Two types of stall patterns in the centrifugal compressor with a wide vaneless diffuser were
numerically studied in this paper. We carried out kinds of three-dimensional numerical …

Centrifugal compressors employed in the oil and gas industry are operated at high gas
pressure conditions and are used in a wide operation range. Accurate prediction of the …

This paper presents the universal method of assessing the Vaneless Diffuser Rotating Stall
(VDRS) cells' size with the use of the Particle Image Velocimetry (PIV) technique. Two …