DRAFT: Numerical investigations of hub treatments for cantilever stators

Andreas Loos, Hans Peter Kau

Research output: Contribution to conferencePaperpeer-review

Abstract

The flow field of high pressure compressors is strongly influenced by secondary flow phenomena which lead to performance degradations. A significant fraction of the associated losses arises from tip as well as hub clearance vortices and their interaction with the main flow. In order to decrease the negative effect of clearance vortices, the application of slotted hub treatments underneath a cantilevered stator, is studied within the present paper. Hub treatments are applied to stators with different tip gap sizes and their aerodynamic effect is evaluated in comparison to smooth wall configurations. The model comprises the investigated stator within a five-row compressor. Detailed insight is provided by numerical investigations with the compressible Reynolds-averaged Navier-Stokes equations. The structures led to an⋯.

Original languageEnglish
StatePublished - 2014
Event15th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2014 - Honolulu, United States
Duration: 24 Feb 201428 Feb 2014

Conference

Conference15th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2014
Country/TerritoryUnited States
CityHonolulu
Period24/02/1428/02/14

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