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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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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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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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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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Axisymmetrically Stalled Flow Performance for Multistage Axial Compressors
Journal of Turbomachinery, 1986A study of the stalled flow performance of multistage axial compressors is presented. A proposal is made regarding the form of axisymmetric pumping performance in stall (which is a requisite of current rotating stall models) over the entire compressor flow range, including reversed flow. It is also shown that the axisymmetric performance can rise above
S. G. Koff, E. M. Greitzer
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Conceptual Cost Estimation of Multistage Axial Compressor Modules
Volume 14: Design, Systems, and Complexity, 2019Abstract Development of product architectures is a fundamental task in the conceptual design of complex products such as axial compressor of gas turbines. The definition of cost-effective architectures results from the introduction of conceptual cost estimation models aiming at the assessment of economical performances of different ...
Michele Germani +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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Optimization Method of the Multistage Axial Compressors Using CFD Simulation
International Journal of Computational Methods, 2021The current level of numerical methods of gas dynamics makes it possible to optimize compressors using 3D CFD models. However, the methods and means are not sufficiently developed for their wide application. This paper describes a new method for the optimization of multistage axial compressors based on 3D CFD modeling and summarizes the experience of ...
Grigorii Popov +5 more
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