Experimental investigation of vortex structure in corner region of a linear compressor cascade

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Abstract

A detailed experimental investigation was carried out to examine the vortex structure in the corner region (between the end wall and the suction surface of blades) of a linear compressor cascade. A corner vortex was identified in the corner flow in the experiment. The corner vortex sheds from the pressuredriven boundary layer on the end wall in a process of threedimensional separation. It dominates the corner flow by the strong interaction with the main flow and the boundary layer on the suction surface of blade. The difference between the corner vortex and the well-known passage vortex is discussed. A topology of the vortex structure is proposed. Furthermore, the dynamic effects of the vortex structure has been investigated, which leads to a explanation for the mechanism of corner stall in compressor cascades.

Original languageEnglish
Title of host publicationTurbomachinery
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791878989
DOIs
StatePublished - 1991
EventASME 1991 International Gas Turbine and Aeroengine Congress and Exposition, GT 1991 - Orlando, United States
Duration: 3 Jun 19916 Jun 1991

Publication series

NameProceedings of the ASME Turbo Expo
Volume1

Conference

ConferenceASME 1991 International Gas Turbine and Aeroengine Congress and Exposition, GT 1991
Country/TerritoryUnited States
CityOrlando
Period3/06/916/06/91

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