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http://dx.doi.org/10.5293/KFMA.2002.5.1.042

Characteristics of Rotating Stall in a Centrifugal Compressor with Vaned Diffuser  

Lee, Du-Yeol (KIST 열 유동제어연구센터)
Kang, Chang-Sik (KIST 열 유동제어연구센터)
Shin, You-Hwan (KIST 열 유동제어연구센터)
Kim, Kwang-Ho (KIST 열 유동제어연구센터)
Publication Information
The KSFM Journal of Fluid Machinery / v.5, no.1, 2002 , pp. 42-48 More about this Journal
Abstract
In this study, the instability of a centrifugal compressor with vaned diffuser was investigated. During unstable operation of the test compressor, pressure fluctuations at different diffuser radius ratios were measured by using high frequency pressure transducers. Two different types of stall, mild and deep stalls, were observed alternately and irregularly at some flow rates where the compressor performance was steeply deteriorated. In this transient zone, the size of rotating stall cell was estimated through the wavelet transform analysis. It was about 45 percents of rotor circumferential space at 300 rpm and not dependent on flow rate.
Keywords
Flow Coefficient; Static Pressure Rise Coefficient; Rotating Stall; Wavelet Transform; Rabbit Stall Cell; Vaned Diffuser;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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