Results 11 to 20 of about 32,011 (293)
Entropy, 2015 Based on phase space reconstruction and fractal dynamics in nonlinear dynamics, a method is proposed to extract and analyze the dynamics of the rotating stall in the impeller of centrifugal compressor, and some numerical examples are given to verify the ...
Le Wang, Jiazhong Zhang, Wenfan Zhang
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Energies, 2018 It is of great value to study the impact of abnormal blade installation angle on the inducement mechanism of rotating stall to achieve the active control of rotating stall in an axial fan.
Lei Zhang +5 more
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Propulsion and Power Research, 2023 Based on the sample entropy algorithm in nonlinear dynamics, an improved sample entropy method is proposed in the aerodynamic system instability identification for the stall precursor detection based on the nonlinear feature extraction algorithm in an ...
Mingming Zhang +5 more
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Propagation of stall in a compressor blade row [PDF]
, 1955 Recent experimental observations on compressors, in particular those of Rannie and Iura, have clarified some features of the phenomenon of stall propagation.
Marble, Frank E.
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Advances in Mechanical Engineering, 2019 Rotating stall is a common instability phenomenon that occurs in turbomachinery. Rotating stall 3D instability can be characterized as one or more stall cells rotating at a fraction of rotor velocity.
Lei Zhang +3 more
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International Journal of Rotating Machinery, 2013 The ratios between the main frequency of rotating stall and rotational frequency may be considered in the form of exact ratios of small natural numbers if the pressure signals in compressors during rotating stall include the rotor rotation frequency ...
Yeshayahou Levy +4 more
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Stall Mode Transformation in the Wide Vaneless Diffuser of Centrifugal Compressors
Energies, 2020 A review on the rotating stall in the vaneless diffuser of centrifugal compressors is presented showing that different stall modes characterized by different numbers of cells can be detected within the diffuser even if the operating condition remains ...
Yaguang Heng +4 more
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Simulation of Entropy Generation under Stall Conditions in a Centrifugal Fan
Entropy, 2014 Rotating stalls are generally the first instability met in turbomachinery, before surges. This 3D phenomenon is characterized by one or more stalled flow cells which rotate at a fraction of the impeller speed. The goal of the present work is to shed some
Lei Zhang +3 more
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Computational fluid dynamics simulations of blade damage effect on the performance of a transonic axial compressor near stall [PDF]
, 2014 Gas turbine axial compressor blades may encounter damage during service for various reasons such as damage by debris from casing or foreign objects impacting the blades, typically near the rotor’s tip.
Abdulnaser I Sayma +4 more
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Simulation of Broadband Noise Sources of an Axial Fan under Rotating Stall Conditions
Advances in Mechanical Engineering, 2014 Study on the influence of rotating stall on the aerodynamic noise of axial fan has important value to warn of the occurrence of stall through monitoring the noise variations.
Lei Zhang, Rui Wang, Songling Wang
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