A Review of Rotating Stall in Vaneless Diffuser of Centrifugal Compressor
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Thermal Science"
DOI: 10.1007/s11630-020-1261-y
Abstract: 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 vibrations of the entire system. One cause of these instabilities… read more here.
Keywords: vaneless diffuser; centrifugal compressor; rotating stall;
A high-order model of rotating stall in axial compressors with inlet distortion
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2017.03.014
Abstract: Abstract In this paper, a high-order distortion model is proposed for analyzing the rotating stall inception process induced by inlet distortion in axial compressors. A distortion-generating screen in the compressor inlet is considered. By assuming… read more here.
Keywords: distortion; model; high order; inlet distortion ... See more keywords
Study on static and dynamic characteristics of an axial fan with abnormal blade under rotating stall conditions
Sign Up to like & getrecommendations! Published in 2019 at "Energy"
DOI: 10.1016/j.energy.2018.12.125
Abstract: Abstract Based on Reynolds averaged Navier-Stokes (RANS) equation and Realizable k-e turbulence model, the influence of abnormal deflection of two adjacent moving blades in an axial fan was discussed numerically. The flow field in the… read more here.
Keywords: dynamic characteristics; axial fan; static dynamic; stall conditions ... See more keywords
Investigation on the influence of seal clearance leakage on the rotating stall characteristics for a centrifugal pump
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0197065
Abstract: The occurrence and development of centrifugal pump rotating stall is closely related to disturbance in the incoming flow. The seal clearance leakage is an inherent disturbance in the impeller incoming flow of centrifugal pumps. In… read more here.
Keywords: leakage; centrifugal pump; clearance leakage; seal clearance ... See more keywords
Study on rotating stall characteristics of centrifugal pumps based on gamma transition model
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0206916
Abstract: The phenomenon of rotating stall in centrifugal pumps is closely associated with the evolution of the blade boundary layer. Aiming to accurately predict the characteristics of the boundary layer, this study investigates the phenomenon of… read more here.
Keywords: pressure; stall vortex; transition; vortex ... See more keywords
Investigating three-dimensional vortex evolution in centrifugal pump under rotating stall conditions using tomographic particle image velocimetry
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0211425
Abstract: A rotating stall in centrifugal pumps commonly occurs under off-design operations, which is a detrimental phenomenon leading to flow instabilities, pressure fluctuations, and reduced performance. A time-resolved non-intrusive three-dimensional (3D) flow visualization method is developed… read more here.
Keywords: vortex structures; tomographic particle; three dimensional; rotating stall ... See more keywords
Investigation of Rotating Stall Phenomenon and Optimization in Mixed-Flow Waterjet Propulsion Device
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Materials Science and Engineering"
DOI: 10.1155/2020/9421809
Abstract: The rotating stall is a kind of flow phenomenon in the impeller harming the navigation speed of vessels propelled by a waterjet propulsion device when the waterjet propulsion device operates at the small flow rate… read more here.
Keywords: waterjet propulsion; propulsion device; rotating stall; device ... See more keywords
A review of rotating stall in reversible pump turbine
Sign Up to like & getrecommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science"
DOI: 10.1177/0954406216640579
Abstract: Currently, operations of reversible pump turbines in pumped hydro energy storage plant suffer great instability problems in the well-known S-shaped characteristic regions, leading to the failure of start, significant pressure fluctuations, and severe vibrations of… read more here.
Keywords: reversible pump; rotating stall; pump turbine;
Investigation of flow instability characteristics in a low specific speed centrifugal pump using a modified partially averaged Navier–Stokes model
Sign Up to like & getrecommendations! Published in 2019 at "Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy"
DOI: 10.1177/0957650919830188
Abstract: In this study, a modified partially averaged Navier–Stokes (MPANS) model is applied to investigate the flow instability characteristics in a low specific centrifugal pump. In MPANS model, the unresolved-to-total ratio of kinetic energy fk is… read more here.
Keywords: pump; flow; model; separation ... See more keywords
Rapid Prediction of Compressor Rotating Stall Inception Using Arnoldi Eigenvalue Algorithm
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DOI: 10.2514/1.j062482
Abstract: This paper presents a stability model that can make a rapid prediction of the rotating stall inception in turbomachinery and provide the spatial distribution of the corresponding instability mode. In addition, this model can take… read more here.
Keywords: rotating stall; algorithm; rapid prediction; stall inception ... See more keywords
AI-Based Detection of Surge and Rotating Stall in Axial Compressors via Dynamic Model Parameter Estimation
Sign Up to like & getrecommendations! Published in 2024 at "Fluids"
DOI: 10.3390/fluids9060134
Abstract: Compressors are an essential component of aircraft engines. Their design and operation must be extremely reliable as engine safety and performance depend greatly on these elements. Axial compressors exhibit instabilities, such as surge or rotating… read more here.
Keywords: system; axial compressors; model; surge rotating ... See more keywords