Results 221 to 230 of about 5,221 (262)

Unsteady Effects in Axial Compressors: A Multistage Simulation

Journal of Propulsion and Power, 2013
This 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, Naylor, E, Hodson, HP, Lapworth, L   +3 more
openaire   +2 more sources

Axisymmetrically Stalled Flow Performance for Multistage Axial Compressors

Journal of Turbomachinery, 1986
A 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
openaire   +1 more source

Conceptual Cost Estimation of Multistage Axial Compressor Modules

Volume 14: Design, Systems, and Complexity, 2019
Abstract 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, Irene Martinelli, Marco Mandolini, Federico Campi, Claudio Favi   +4 more
openaire   +1 more source

The nature of wakes in multistage axial flow compressors

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1999
This 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
openaire   +1 more source

Optimization Method of the Multistage Axial Compressors Using CFD Simulation

International Journal of Computational Methods, 2021
The 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, Igor Egorov, Evgenii Goriachkin, Oleg Baturin, Daria Kolmakova, Valery Matveev   +5 more
openaire   +1 more source

The Development of a Multistage Axial Compressor Research Facility

47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011
Recent 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, Natalie Smith, Anton Talalayev, Nicole Key   +3 more
openaire   +1 more source

Optimization of a Multistage Axial Compressor Stochastic Approach

Volume 1: Turbomachinery, 1992
A procedure of a multistage axial compressor (MAC) parameters optimization in stochastic setting has been offered. The procedure allows to obtain a stable solution from the point of view of its practical realization. A concept of robustness (stability) of turbomachine optimum design has been introduced, and the criteria of stability degree evaluation ...
openaire   +1 more source

Multistage Axial Compressor Flow Field Predictions Using CFD and Through-Flow Calculations

Volume 2C: Turbomachinery, 2016
A comparison between two different methods for aerodynamic calculation of multistage axial compressors is presented. Results obtained using classical 2D through-flow calculations were compared with CFD results for several test cases, including various subsonic and supersonic multistage axial compressors with different geometric configurations and stage
Banjac, Milan, Petrović, Milan, Wiedermann, Alexander   +2 more
openaire   +3 more sources

Attenuation of circumferential inlet distortion in multistage axial compressors.

Journal of Aircraft, 1968
Circumferential inlet distortion in a high hub-tip ratio multistage machine is treated by analyzing the compressor as a region in which a large number of small stages produce a pressure rise that is a function of the local mass flow rate. The resistance to circumferential flow due to the blading is included through an empirical factor. It is found that
G. A. PLOURDE, A. H. STENNING
openaire   +1 more source

Numerical Simulation of Particulates in Multi-Stage Axial Compressors

Volume 2A: Turbomachinery, 2016
Aircraft engines ingest airborne particulate matter, such as sand, dirt, and volcanic ash, into their core. The ingested particulate is transported by the secondary flow circuits via compressor bleeds to the high pressure turbine and may deposit resulting in turbine fouling and loss of cooling effectiveness.
Swati Saxena, Giridhar Jothiprasad, Corey Bourassa, Byron Pritchard   +3 more
openaire   +1 more source