Results 21 to 30 of about 172,746 (245)
International Journal of Rotating Machinery, 2015 The present paper is an attempt in understanding the stall inception mechanism in a low speed, contra rotating axial flow fan stage, using wavelet transforms.
Tegegn Dejene Toge, A. M. Pradeep
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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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Energies, 2021 In this paper, an experimental study was carried out on the rotating instability in an axial compressor subjected to inlet steady paired swirl distortion.
Rong Xu +4 more
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Using Tip Injection to Stability Enhancement of a Transonic Centrifugal Impeller with Inlet Distortion [PDF]
Journal of Applied Fluid Mechanics, 2022 This paper aims to understand the effects of circumferential inlet distortion and tip injection on a transonic impeller performance and flow field. For distorted inflow, the impeller is subjected to a stationary 120-degrees circumferential total pressure
Z. Jahani, H. Khaleghi, S. Tabejamaat
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Stall Inception in Low Pressure Ratio Fans [PDF]
, 2019 A combined experimental and computational test program, with two low-pressure ratio aero-engine fans, has been used to identify the flow mechanisms at stall inception and the subsequent stall cell growth.
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Numerical Study on the Acoustic Characteristics of an Axial Fan under Rotating Stall Condition
Energies, 2017 Axial fan is an important piece of equipment in the thermal power plant that provides enough air for combustion of coal. This paper focuses on the aerodynamic noise characteristics of an axial fan in the development from stall inception to stall cells ...
Lei Zhang +4 more
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Experimental Examination of an Axial Compressor as a Basis for an Active Stall Avoidance System
International Journal of Rotating Machinery, 2000 A single-stage subsonic compressor was examined with respect to compressor instabilities. During the inception of rotating stall, the transients of the pressure rise and mass flow were measured as well as their hysteresis.
Richard Schulze +3 more
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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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Active Suppression of Rotating Stall Inception with Distributed Jet Actuation
International Journal of Rotating Machinery, 2007 An analytical and experimental investigation of the effectiveness of full-span distributed jet actuation for active suppression of long length-scale rotating stall inception is carried out.
Huu Duc Vo
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International Journal of Turbomachinery, Propulsion and Power, 2020 The present paper aims at evaluating the surveillance parameters used for early stall warning in axial compressors, and is based on unsteady pressure measurements at the casing of a single stage axial compressor.
Gabriel Margalida +3 more
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