CUED Publications database

Axial compressor response to inlet flow distortions by a CFD analysis

Charalambous, N and Ghisu, T and Iurisci, G and Pachidis, V and Pilidis, P (2004) Axial compressor response to inlet flow distortions by a CFD analysis. Proceedings of the ASME Turbo Expo 2004, 5 B. pp. 1637-1649.

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Abstract

The usual approach to compressor design considers uniform inlet flow characteristics. Especially in aircraft applications, the inlet flow is quite often non uniform, and this can result in severe performance degradation. The magnitude of this phenomenon is amplified in military engines due to the complexity of inlet duct configurations and the extreme flight conditions. CFD simulation is an innovative and powerful tool for studying inlet distortions and can bring this inside the very early phases of the design process. This project attempts to study the effects of inlet flow distortions in an axial flow compressor trying to minimize the use computer resources and computational time. The first stage of a low bypass ratio compressor has been analyzed and its clean and distorted performance compared outlining the principal changes due to uneven flow distribution: drop in mass flow, increase in pressure and temperature ratios, decrease in surge margin. Three different studies have then been conducted to better understand the effects of the level, the type and the frequency of the distortion.

Item Type: Article
Uncontrolled Keywords: CFD Compressor Distortion Performance Turbomachinery
Subjects: UNSPECIFIED
Divisions: Div C > Engineering Design
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:04
Last Modified: 27 Nov 2014 19:22
DOI: