Backward traveling rotating stall waves in centrifugal compressors

ZS Spakovszky - J. Turbomach., 2004 - asmedigitalcollection.asme.org
Rotating stall waves that travel against the direction of rotor rotation are reported for the first
time and a new, low-order analytical approach to model centrifugal compressor stability is …

Investigation of rotating stall in radial vaneless diffusers with asymmetric inflow

C Hu, C Yang, X Shi, R Zou, L Liu, H Chen - Aerospace Science and …, 2020 - Elsevier
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 …

High-speed stereoscopic PIV study of rotating instabilities in a radial vaneless diffuser

A Dazin, G Cavazzini, G Pavesi, P Dupont… - Experiments in …, 2011 - Springer
This paper presents an experimental analysis of the unsteady phenomena developing in a
vaneless diffuser of a radial flow pump. Partial flow operating conditions were investigated …

Numerical investigation of centrifugal compressor stall with compressed dynamic mode decomposition

C Hu, C Yang, W Yi, K Hadzic, L Xie, R Zou… - Aerospace Science and …, 2020 - Elsevier
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 …

Experimental and numerical investigation of the unsteady flow field and tone generation in an isolated centrifugal fan impeller

D Wolfram, TH Carolus - Journal of Sound and Vibration, 2010 - Elsevier
In spite of a low circumferential Mach number the sound of isolated centrifugal fan impellers
is sometimes dominated by distinctive tones at blade passing frequency (BPF) and integer …

Study of vaneless diffuser rotating stall based on two-dimensional inviscid flow analysis

Y Tsujimoto, Y Yoshida, Y Mori - 1996 - asmedigitalcollection.asme.org
Rotating stalls in vaneless diffusers are studied from the viewpoint that they are basically two-
dimensional inviscid flow instability under the boundary conditions of vanishing velocity …

Effect of inlet leakage flow on the instability in a radial vaneless diffuser

M Fan, A Dazin, G Bois, F Romano - Physics of Fluids, 2023 - pubs.aip.org
The internal flow structures in a vaneless diffuser of a radial pump are experimentally and
numerically investigated. Numerical simulations are used for investigating the prominent …

Flow stability model of centrifugal compressors based on eigenvalue approach

X Sun, Y Ma, X Liu, D Sun - AIAA Journal, 2016 - arc.aiaa.org
A stall inception model of centrifugal compressors is developed on the basis of the global
stability analysis in the present paper. This model takes specific flow patterns and impeller …

Identification of phenomena preceding blower surge by means of pressure spectral maps

G Liśkiewicz, L Horodko, M Stickland… - Experimental Thermal and …, 2014 - Elsevier
In this paper the concept of 'quasi-dynamic'pressure measurements is introduced and used
in order to obtain compressor spectral maps describing the process of surge onset in a …

Unsteady flow within centrifugal compressor channels under rotating stall and surge

S Mizuki, Y Oosawa - 1992 - asmedigitalcollection.asme.org
Unsteady flow patterns throughout a centrifugal compressor system during the rotating stall
and the surge were measured experimentally. Various kinds of unsteady behavior of the …