Results 21 to 30 of about 631 (221)

Development of a Method for Enhanced Fan Representation in Gas Turbine Modeling [PDF]

, 2011
A challenge in civil aviation future propulsion systems is expected to be the integration with the airframe, coming as a result of increasing bypass ratio or above wing installations for noise mitigation. The resulting highly distorted inlet flows to the
Anestis Kalfas, Khaleghi, H., Pilidis, Pericles, Hossein Khaleghi, Doulgeris, Georgios C., Georgios Doulgeris, Kalfas, Anestis I., Pericles Pilidis   +7 more
core   +1 more source

Exploration of Flow Instability Characteristics in a Two-Stage Axial-Flow Compressor via Numerical Simulation Method

Machines, 2023
A four-blade-passage numerical model was developed for a two-stage axial-flow compressor with an inlet guide vane (IGV) for the purpose of studying the steady and dynamic characteristics of the compressor approaching its stability limit.
Tong Wang, Xiangyuan Dou, Yongwen Liu
doaj   +1 more source

Investigation of Different Rotational Speed Characteristics of Multistage Axial Compressor in CAES System

Energies, 2023
An axial compressor has high efficiency under design conditions, but its stable working range is narrow. Adjusting the rotational speed can effectively expand the stable working range.
Pengfei Li, Zhitao Zuo, Xin Zhou, Jingxin Li, Haisheng Chen   +4 more
doaj   +1 more source

Effect and Mechanism of Roughness on the Performance of a Five-Stage Axial Flow Compressor

Aerospace, 2022
In order to prolong the service life of multistage axial compressors, it is increasingly important to study the influence of blade surface roughness on the compressor performance.
Yan Chen, Chunxiang Gao, Wuli Chu
doaj   +1 more source

Trapped Acoustic Modes in an Axial Multi-Stage Compressor Leading to Non-Synchronous Blade Vibrations

International Journal of Turbomachinery, Propulsion and Power, 2022
Non-synchronous blade vibrations have been observed in an experimental multi-stage high-speed compressor setup at part-speed conditions. A detailed numerical study has been carried out to understand the observed phenomenon by performing unsteady full ...
Anne-Lise Fiquet, Stéphane Aubert, Nicolas Buffaz, Agathe Vercoutter, Christoph Brandstetter   +4 more
doaj   +1 more source

Deterministic Stress Modeling for Multistage Compressor Flowfields

, 2013
Unsteadiness is one of the main characteristics in turbomachinery flows. Local unsteady changes in static pressure must exist within a turbomachine in order for that machine to exchange energy with the fluid.
Stollenwerk, Stefan, Edmund Kügeler, Stefan Stollenwerk, Kügeler, Edmund   +3 more
core   +1 more source

Determining the influence of roughness and tip clearance on the axial multistage compressor characteristics

Авіаційно-космічна техніка та технологія
The operation of gas turbine engines inevitably increases the blade roughness and tip clearance in multistage axial compressors. The result is an increase in its thermogasodynamic parameters. The reason for the increase in the roughness of the blades and
Vadym Datsenko
doaj   +1 more source

TAKING INTO ACCOUNT THE BLADES EROSIVE WEAR IN THE MODELING OF CHARACTERISTICS OF THE AIRCRAFT ENGINE MULTISTAGE AXIAL COMPRESSOR

Авіаційно-космічна техніка та технологія, 2017
In developing of methods for diagnostic based on the parameters of the working process of the flow-through part of aviation gas turbine engines, the development of the working process thermogasdynamic model for the engine is the main task.
Елена Серафимовна Барышева, Александр Евгеньевич Дёмин, Роман Леонидович Зеленский   +2 more
doaj   +1 more source

AXIAL FLOW MULTISTAGE COMPRESSOR SURGE LINE DETERMINATION IN PERFORMING CALCULATION STUDIES

Авіаційно-космічна техніка та технологія, 2020
The implementation of the high requirements for modern gas turbine engines depends on the perfection of their components. The reliability of the engine operation is largely determined by the compressor gas-dynamic stability margin.
Вадим Анатольевич Даценко, Александр Евгеньевич Дёмин, Наталия Владимировна Пижанкова   +2 more
doaj   +1 more source

Non-Uniform Time Sampling for Multiple-Frequency Harmonic Balance Computations [PDF]

, 2013
A time-domain harmonic balance method for the analysis of almost-periodic (multi-harmonics) flows is presented. This method relies on Fourier analysis to derive an efficient alternative to classical time marching schemes for such flows.
Dufour, Guillaume, Gallard, François, Puigt, Guillaume, Guédeney, Thomas, Gomar, Adrien, Sicot, Frédéric   +5 more
core   +1 more source