Results 181 to 190 of about 4,884 (235)
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Reverse flow in multistage axial compressors
22nd Joint Propulsion Conference, 1986This 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.
R. N. Gamache, E. M. Greitzer
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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.
John Brossman +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.
G. L. Mellor, T. Root
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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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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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Research On The Application Of Similarity Principle For Multistage Axial Compressor
Proceedings of Global Power & Propulsion Society, 2022Low-speed model fabrication is an effective testing method for deep understanding flow characteristics with low cost and low risk, so it is extensively used in design and optimization of high speed and small scale compressors. Reynolds number, Euler number and Strouhal number are demanded to retain constant for exact similarity method.
Hong Xie +4 more
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Axial Location of Casing Treatment in Multistage Axial Flow Compressors
Volume 6: Turbo Expo 2005, Parts A and B, 2005Koch in Ref. 1 presented a procedure for estimating the maximum pressure rise potential of axial flow compressor stages. When used in conjunction with a stage stacking off-design performance prediction method, it can indicate which stage is likely to be responsible for stalling a multistage compressor.
Junqiang Zhu, Yanhui Wu, Wuli Chu
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Facing the Challenges in CFD Modelling of Multistage Axial Compressors
Volume 2B: Turbomachinery, 2017Multistage axial compressors have always been a great challenge for designers since the flow within these kind of machines, subjected to severe diffusion, is usually characterized by complex and widely developed 3D structures, especially next to the endwalls. The development of reliable numerical tools capable of providing an accurate prediction of the
COZZI, LORENZO +6 more
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