A kind of novel casing treatment is proposed to realize stall margin enhancement by suppressing stall precursor in turbomachinery. In view of its different configuration and mechanism, such casing treatment is named as stall precursor-suppressed casing treatment in the present work, or SPS casing treatment for short. In the present work, the experiments of SPS casing treatment are conducted in a transonic compressor J69 Rotor/Stage. The SPS casing treatment which consists of a backchamber and a perforated plate is designed according to a proposed theoretical model. It is noted that the open area ratio of the casing treatment is only 4–12%, which is much smaller than traditional casing treatments with over 50% open area ratio. The tests show that the SPS casing treatment can improve the stall margin by 8–12% for J69 Rotor, and 4–12% for J69 Stage. Meanwhile, the mechanism of stall margin improvement with such casing treatment will be revealed in this investigation. Comparing with the evolution of the precursors without casing treatments, the propagation of the stall inception waves will be suppressed and the non-linear development of the stall process will be delayed under the casing treatment case.
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ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
June 16–20, 2014
Düsseldorf, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4563-9
PROCEEDINGS PAPER
Effect of Novel Casing Treatment on the Suppression of Stall Precursor in a Transonic Compressor
Dakun Sun,
Dakun Sun
Beijing University of Aeronautics & Astronautics, Beijing, China
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Xiaofeng Sun,
Xiaofeng Sun
Beijing University of Aeronautics & Astronautics, Beijing, China
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Xiaohua Liu,
Xiaohua Liu
China Academy of Civil Aviation Science and Technology, Beijing, China
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Feng Lin,
Feng Lin
Chinese Academy of Sciences, Beijing, China
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Nie Chao Qun
Nie Chao Qun
Chinese Academy of Sciences, Beijing, China
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Dakun Sun
Beijing University of Aeronautics & Astronautics, Beijing, China
Xiaofeng Sun
Beijing University of Aeronautics & Astronautics, Beijing, China
Xiaohua Liu
China Academy of Civil Aviation Science and Technology, Beijing, China
Feng Lin
Chinese Academy of Sciences, Beijing, China
Nie Chao Qun
Chinese Academy of Sciences, Beijing, China
Paper No:
GT2014-26439, V02DT44A025; 11 pages
Published Online:
September 18, 2014
Citation
Sun, D, Sun, X, Liu, X, Lin, F, & Qun, NC. "Effect of Novel Casing Treatment on the Suppression of Stall Precursor in a Transonic Compressor." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 2D: Turbomachinery. Düsseldorf, Germany. June 16–20, 2014. V02DT44A025. ASME. https://doi.org/10.1115/GT2014-26439
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