Axial location of casing treatment in multistage axial flow compressors

Junqiang Zhu, Yanhui Wu, Wuli Chu

Research output: Contribution to conferencePaperpeer-review

4 Scopus citations

Abstract

Koch in Ref. 1 presented a procedure for estimating the maximum pressure rise potential of axial flow compressor stages. When used in conjunction with a stage stacking off-design performance prediction method, it can indicate which stage is likely to be responsible for stalling a multistage compressor. Based on Koch's approach, it is believed that the casing over the stage that stalls first (critical stage) should be treated in order to prevent or reduce the possibility of stalling. With the help of a two-stage compressor test rig, experimental investigations on the stage stalling and the ideal axial location of the treated casing in the multistage environment were performed using a recessed circumferential slot casing treatment. Experimental results indicate that it is possible to predict the stage that stalls first using Koch's engineering method. In addition, it was verified that if the casing treatment was located over the critical stage, the stall margin of the whole multistage compressor could be improved significantly.

Original languageEnglish
Pages365-371
Number of pages7
DOIs
StatePublished - 2005
EventASME Turbo Expo 2005 - Gas Turbie Technology: Focus for the Future - Reno-Tahoe, NV, United States
Duration: 6 Jun 20059 Jun 2005

Conference

ConferenceASME Turbo Expo 2005 - Gas Turbie Technology: Focus for the Future
Country/TerritoryUnited States
CityReno-Tahoe, NV
Period6/06/059/06/05

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