Results 11 to 20 of about 32,232 (297)
Applied Sciences, 2020 Rotating stall, which is a common phenomenon in turbomachinery, strongly relates to the flow rate condition. In centrifugal impellers, rotating stall was induced by the incidence angle on blade leading-edge at partial-load.
Hongying Luo +3 more
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Influence of axial spacing on stall development of FBCDZ-10-No20 mode contra-rotating fan
Meitan kexue jishu, 2023 The rotating fan is prone to instability such as stall and even surge when operating at low flow rates. In order to study the influence of axial spacings on the stall inception and its development and propagation process of a contra-rotating fan , a ...
Qingguang CHEN +3 more
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Xibei Gongye Daxue Xuebao, 2021 By experiment at a low-speed large-scale axial contra-rotating compressor, the near stall points of 19 speed configurations were captured and the stall characteristics under different speed ratios were obtained successfully.
Wang Hao +3 more
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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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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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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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Rotating stall and surge control: a survey [PDF]
Proceedings of 1995 34th IEEE Conference on Decision and Control, 2002 The paper presents an analysis of the current state of the art in the control of aero- or hydrodynamic instabilities in turbomachines. It describes the flow phenomena associated with rotating stall and surge, discusses methods devised to prevent these instabilities occuring, but concentrates mainly on the active control (stabilization) of the unstable ...
openaire +2 more sources
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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