Results 211 to 220 of about 18,174 (265)
Experimental and Computational Study of Forced Response in a Multistage Axial Compressor [PDF]
53rd AIAA Aerospace Sciences Meeting, 2015 This paper utilizes an advanced aeroelastic CFD code to analyze the aerodynamic forcing functions and resulting vibrational response of the embedded rotor in a 3-stage axial compressor operating at the 1 torsion mode crossing. A forced response analysis of a fullannulus computational model was performed to compute the vibrational response of the rotor ...
David Monk +3 more
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Flow visualization for investigating stator losses in a multistage axial compressor
Experiments in Fluids, 2015The methodology and implementation of a powder-paint-based flow visualization technique along with the illuminated flow physics are presented in detail for application in a three-stage axial compressor. While flow visualization often accompanies detailed studies, the turbomachinery literature lacks a comprehensive study which both utilizes flow ...
Natalie R. Smith, Nicole L. Key
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Reverse flow in multistage axial compressors [PDF]
22nd Joint Propulsion Conference, 1986 This paper reports an experimental study of multistage axial compressor operation under reverse-flow conditions. The experiments were performed on a high hub-tip ratio, three-stage, low aspect ratio compressor. Unstalled and stalled performance characteristics are presented for two builds with different blade-stagger angles.
Edward M. Greitzer, R. N. Gamache
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Investigation of Tip Leakage Vortex Breakdown in a High-Speed Multistage Axial Compressor
Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, 2022In this paper, an unsteady tip leakage flow instability is identified and investigated for an axial compressor at near surge conditions. We describe the results of experimental verification of a new compressor developed by improving the blade geometry ...
R. Seki +5 more
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Interacting Effects in a Multistage Axial Compressor Using Shrouded and Cantilevered Stators
Journal of Propulsion and Power, 2021This paper describes the analysis of the flowfield in a four-stage low-speed axial compressor at the design point investigated both numerically and experimentally, with particular emphasis on the i...
Ilaria De Dominicis +4 more
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The nature of wakes in multistage axial flow compressors
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1999This paper describes the measurement and processing of unsteady turbulence data from a multistage low-speed compressor. In this study, a two-element hot-wire probe was traversed along a circumferential path downstream of the third rotor row of a large-scale low-speed four-stage facility.
S Read, R. L. Elder
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Unsteady Effects in Axial Compressors: A Multistage Simulation
Journal of Propulsion and Power, 2013This work presents a numerical simulation of a four-stage axial compressor with cantilevered stators and repeating stages. Two simulations have been accomplished, namely, unsteady with sliding plane and steady with mixing plane, over a wide range of operating conditions.
Montomoli, F +3 more
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Generalized Multistage Axial Compressor Characteristics
Journal of Basic Engineering, 1961Presented below is a method of calculating the off-design performance of multistage axial compressor characteristics that differs in concept from previous methods. A set of resulting calculations has certain general properties; namely, that it is independent of absolute stage work and flow coefficient, number of stages, and annulus geometry.
T. Root, George L. Mellor
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The Development of a Multistage Axial Compressor Research Facility
47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011Recent renovations to the Purdue 3-stage axial compressor research facility have led to improved inlet flow to the facility and expanded driveline capabilities. The original layout included a front-driven compressor, which led to challenges with uniformity of inlet air temperature and velocity profiles.
Natalie R. Smith +3 more
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An experimental study of rotor-stator wake unsteadiness in a multistage axial compressor
, 2020The flow in a multistage axial compressor is highly unsteady, three-dimensional and turbulent. The interaction between compressor blade rows results in rotor/stator wake unsteadiness, which is not typically considered in the computational fluid dynamics (
Jun Li, Jun Hu, Chenkai Zhang
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