The effects of water ingestion on the performance of an axial flow compressor are experimentally studied with and without endwall treatment. The background to the work is derived from the assessment of airworthiness for an aero-engine. The stability-enhancing effects with endwall treatments under rain ingestion are not previously known. Moreover, all the endwall treatments are designed under dry air conditions in the compressor. Water ingestion at 3% and 5% relative to the design mass flow proposed in the airworthiness standard are applied to initially investigate the effects on the performance under smooth casing (SC). Results show that the water ingestions are mainly located near the casing wall after they move through the rotor blade row. The pressure rise coefficient increases, efficiency declines, and torque increases under the proposed water ingestion. The increase of the inlet water increases the thickness of the water film downstream the rotor blade row and aggravates the adverse effects on the performances. Subsequently, three endwall treatments, namely circumferential grooves, axial slots, and hybrid slots–grooves, are tested with and without water ingestion. Compared with no water ingestion, the circumferential grooves basically have no resistance to the water ingestion. The axial slots best prevent the drop of the pressure rise coefficient induced by water ingestion, and hybrid slots–grooves are the second-best place owing to the contribution of the front axial slots. Therefore, the hybrid slots–grooves can not only extend the stall margin with less efficiency penalty compared with axial slots, but also prevent rain ingestion from worsening the compressor performance.
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August 2018
Research-Article
Influence of Rain Ingestion on the Endwall Treatment in an Axial Flow Compressor
Jichao Li,
Jichao Li
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: lijichao@iet.cn
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: lijichao@iet.cn
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Juan Du,
Juan Du
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: dujuan@iet.cn
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: dujuan@iet.cn
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Mingzhen Li,
Mingzhen Li
Key Laboratory of Advanced Energy and Power,
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
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Feng Lin,
Feng Lin
Key Laboratory of Advanced Energy and Power,
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
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Hongwu Zhang,
Hongwu Zhang
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
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Chaoqun Nie
Chaoqun Nie
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
Search for other works by this author on:
Jichao Li
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: lijichao@iet.cn
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: lijichao@iet.cn
Juan Du
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: dujuan@iet.cn
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
e-mail: dujuan@iet.cn
Mingzhen Li
Key Laboratory of Advanced Energy and Power,
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
Feng Lin
Key Laboratory of Advanced Energy and Power,
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
Beijing 100190, China
Hongwu Zhang
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
Chaoqun Nie
Industrial Gas Turbine Laboratory,
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
Institute of Engineering Thermophysics, CAS,
University of Chinese Academy of Sciences,
Beijing 100190, China
1Corresponding author.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received March 8, 2017; final manuscript received June 5, 2018; published online July 24, 2018. Assoc. Editor: Seung Jin Song.
J. Turbomach. Aug 2018, 140(8): 081001 (13 pages)
Published Online: July 24, 2018
Article history
Received:
March 8, 2017
Revised:
June 5, 2018
Citation
Li, J., Du, J., Li, M., Lin, F., Zhang, H., and Nie, C. (July 24, 2018). "Influence of Rain Ingestion on the Endwall Treatment in an Axial Flow Compressor." ASME. J. Turbomach. August 2018; 140(8): 081001. https://doi.org/10.1115/1.4040550
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