This paper proposes a unique stall risk index based on pressure signals by high-response transducers on the casing wall at the rotor leading-edge location. The aim of the research is to explore the possibility of reducing current excessive stall margin requirement for compressor design based on the worst-case scenario. The index is generated by computing correlation degradation of pressure time histories of current and one revolution before over each blade pitch. Tests conducted on a single-stage low-speed compressor exhibits that the correlation diminishes significantly with proximity to stall, and the proposed technique might have the capability of generating a stall warning signal sufficiently in advance of spike inception. Extensive experiments on a research compressor show that the degree of the index degradation depends on various factors, such as flow coefficient, tip clearance, and rotor blade incidence. In order to obtain a reliable stall warning signal in practical use, these effects must be carefully examined.
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July 2007
Technical Papers
Early Stall Warning Technique for Axial-Flow Compressors
Nobuyuki Tahara,
Nobuyuki Tahara
Ishikawajima-Harima Heavy Industries
, Toyosu, Tokyo, 135-8710 Japan
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Masahiro Kurosaki,
Masahiro Kurosaki
Ishikawa National College of Technology
, Kahoku-gun, Ishikawa, 929-0392 Japan
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Yutaka Ohta,
Yutaka Ohta
Waseda University
, Shinjuku, Tokyo, 169-8555 Japan
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Eisuke Outa,
Eisuke Outa
Waseda University
, Shinjuku, Tokyo, 169-8555 Japan
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Takurou Nakajima,
Takurou Nakajima
Ishikawajima-Harima Heavy Industries
, Toyosu, Tokyo, 135-8710 Japan
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Tomofumi Nakakita
Tomofumi Nakakita
Ishikawajima-Harima Heavy Industries
, Toyosu, Tokyo, 135-8710 Japan
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Nobuyuki Tahara
Ishikawajima-Harima Heavy Industries
, Toyosu, Tokyo, 135-8710 Japan
Masahiro Kurosaki
Ishikawa National College of Technology
, Kahoku-gun, Ishikawa, 929-0392 Japan
Yutaka Ohta
Waseda University
, Shinjuku, Tokyo, 169-8555 Japan
Eisuke Outa
Waseda University
, Shinjuku, Tokyo, 169-8555 Japan
Takurou Nakajima
Ishikawajima-Harima Heavy Industries
, Toyosu, Tokyo, 135-8710 Japan
Tomofumi Nakakita
Ishikawajima-Harima Heavy Industries
, Toyosu, Tokyo, 135-8710 JapanJ. Turbomach. Jul 2007, 129(3): 448-456 (9 pages)
Published Online: July 29, 2006
Article history
Received:
July 2, 2006
Revised:
July 29, 2006
Citation
Tahara, N., Kurosaki, M., Ohta, Y., Outa, E., Nakajima, T., and Nakakita, T. (July 29, 2006). "Early Stall Warning Technique for Axial-Flow Compressors." ASME. J. Turbomach. July 2007; 129(3): 448–456. https://doi.org/10.1115/1.2447948
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