Detail publikace

Enhancement of Centrifugal Compressor Stable Operation by Using of Internal Recirculation Channel

Anglický název

Enhancement of Centrifugal Compressor Stable Operation by Using of Internal Recirculation Channel

Typ

článek v časopise - ostatní, Jost

Jazyk

en

Originální abstrakt

Centrifugal compressors with high pressure ratio are widely used in small aircraft turbine engines and turbocharges. At high rotational speeds they have narrow stable operating region and commonly used impellers with back swept blades are not able to ensure requested stability. In order to achieve wider stable operating region, some other anti-surge measures can be used, such as an Internal Recirculation Channel (IRC) located in compressor impeller inlet. This article presents the influence of various IRC inlet slot geometry on air flow parameters. The flow velocity profiles downstream the IRC outlet slot are evaluated and influence of various channel configurations on compressor performance map is shown. Results of the experiment together with CFD simulations enable us to analyse the airflow in IRC and find out its most suitable geometry.

Anglický abstrakt

Centrifugal compressors with high pressure ratio are widely used in small aircraft turbine engines and turbocharges. At high rotational speeds they have narrow stable operating region and commonly used impellers with back swept blades are not able to ensure requested stability. In order to achieve wider stable operating region, some other anti-surge measures can be used, such as an Internal Recirculation Channel (IRC) located in compressor impeller inlet. This article presents the influence of various IRC inlet slot geometry on air flow parameters. The flow velocity profiles downstream the IRC outlet slot are evaluated and influence of various channel configurations on compressor performance map is shown. Results of the experiment together with CFD simulations enable us to analyse the airflow in IRC and find out its most suitable geometry.

Klíčová slova anglicky

centrifugal compressor, recirculation channel, stability, velocity profiles, experiment, CFD simulation

Vydáno

06.10.2016

Nakladatel

University of West Bohemia / Západočeská univerzita

Místo

Plzeň

ISSN

1802-680X

Počet stran

10

BIBTEX


@article{BUT127540,
  author="Miroslav {Růžička},
  title="Enhancement of Centrifugal Compressor Stable Operation by Using of Internal Recirculation Channel",
  year="2016",
  month="October",
  publisher="University of West Bohemia / Západočeská univerzita",
  address="Plzeň",
  issn="1802-680X"
}