Title: Enhancement of centrifugal compressor stable operation using an internal recirculation channel
Authors: Růžička, Miroslav
Citation: Applied and Computational Mechanics. 2016, vol. 10, no. 2, p. 111-122.
Issue Date: 2016
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/acm/article/view/312/376
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: odstředivý kompresor;recirkulační kanál;experimenty;rychlostní profily;CFD analýza
Keywords in different language: centrifugal compressor;recirculation channel;experiments;velocity profiles;CFD analysis
Abstract: Centrifugal compressors with a high pressure ratio arewidely used in small aircraft turbine engines and turbocharges. At high rotational speeds they have a narrow stable operating region and the commonly used impellers with back swept blades are not able to ensure requested stability. In order to achieve a wider stable operating region, some other anti-surgemeasures can be used such as an Internal RecirculationChannel (IRC) located in the inlet area of the compressor impeller. This paper analyses the influence of various IRC inlet slot geometries on air flow parameters. The flow velocity profiles downstream of the IRC outlet slot are evaluated and the influence of various channel configurations on compressor performance map is shown. Results from experiments as well as CFD simulations enable us to analyse the airflow in IRC and find out its most suitable geometry.
Rights: © 2016 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 10, number 2 (2016)
Volume 10, number 2 (2016)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/22413

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