Results 241 to 250 of about 18,174 (265)

An Analytical Method for the Fault Diagnosis of Axial Multistage Compressors

Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations, 1991
A deterministic approach for troubleshooting in axial multistage flow compressors, that is to say, the solution of the diagnostic or inverse problem is presented. The approach utilizes a model which is capable of predicting the compressor performance with and without faults — solution of analysis or direct problems — previously developed
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Meanline Design and Aerodynamic 3D RANS Investigations of a Multistage Helium Axial Compressor

Volume 12A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics
A mean line aerodynamic design and analysis of a multistage helium gas axial flow compressor is presented for a High-Temperature Gas Reactor (HTGR) application.
Arvind Prabhakar
semanticscholar   +1 more source

Unsteady Flow Effects in a High-Speed Multistage Axial Compressor

Volume 7: Turbomachinery, Parts A and B, 2009
As a first step in practical application of virtual rig test, in present work, a full unsteady multistage simulation was performed for a 6-stage transonic axial compressor at design point. A steady multistage simulation was also performed and compared with the results of the unsteady simulation to clarify the unsteady flow effects.
Dai Kato, Mai Yamagami, Junichi Kazawa, Hidekazu Kodama, Naoki Tsuchiya, Yasuo Horiguchi   +5 more
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Exit Flowfield of an Embedded Stator in a Multistage Axial Flow Compressor

Journal of Propulsion and Power, 1997
A complete area traverse downstream of the second stator of the Pennsylvania State University Multistage Compressor Facility has been carried out at the peak efŽ ciency and peak pressure ratio operating conditions using a miniature (1.07-mm-diam) Ž ve-hole probe and a thermocouple probe.
J. Prato, N. Suryavamshi, B. Lakshminarayana   +2 more
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Numerical investigation on rotating instability in a multistage axial-radial combined compressor

Proceedings of Global Power & Propulsion Society
Axial-radial combined compressors are prevalent in small and medium aero-engines. However, the understanding of aerodynamic instability in combined compressors lags behind that in pure axial compressors.
Cheng Tian, Song Fu
semanticscholar   +1 more source

Influence of rain droplets on the stage characteristics of an axial multistage compressor [PDF]

51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015
Aircraft engines are required to operate under different environmental conditions while keeping safety and reliability as its paramount priority. During flight operation, liquid water may enter the engine and can adversely affect the engine performance and operability. In order to research deeply into how wet compression affects aero-engine performance
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Simulation and validation of instability transient process in multistage high-speed axial compressor based on the body-force model

The Physics of Fluids
In this paper, a method for simulating the instability transient process of the axial compression system based on the body-force model is developed, and a corresponding simulation program is developed.
Jiajia Ji, Ronghui Cheng, Jun Hu, Zhiqiang Wang, Shuai Ma   +4 more
semanticscholar   +1 more source

Multistage Axial Compressor Program on Tip Clearance Effects.

1981
Abstract : Tip clearance has long been known to be a source of losses in axial compressors with cantilevered blades. The reasons for the losses, however, are not well understood and current practice in engine design still requires extensive effort to maintain constant minimal operating clearances over a wide range of conditions.
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Optimization Algorithm for Axial Multistage Compressor Workflow

AIAA Propulsion and Energy 2020 Forum, 2020
Daria Kolmakova, Grigorii Popov, Andrei Volkov, Igor Egorov, Oleg Baturin, Evgenii Goriachkin   +5 more
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A New Method for the Aerodynamic Design of Multistage Axial-Flow Compressors

Journal of the Aeronautical Sciences, 1948
This paper describes the derivation of an optimum inlet Mach Number for the first stagesof an axial-flow compressor based on free vortex design. The optimum Mach Number is related to the given inlet conditions, dimensions, and tip speed and specifies the maximum amount of work tha t can be done on the fluid and the corresponding free vortex velocity ...
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