Chen, Pingping and Qiao, Weiyang and Liesner, Karsten and Meyer, Robert (2014) Effect of Boundary Layer Suction on Compressor Hub-Corner Separation, Part I: Chord-wise and Pitch-wise Location. In: ASME Turbo Expo 2014, GT2014 (25043). ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, 2014-06-16 - 2014-06-20, Düsseldorf, Germany.
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Abstract
The large secondary flow area in the compressor hub-corner region usually leads to three-dimensional separation in the passage with large amounts of total pressure loss. In this paper numerical simulations of a linear high-speed compressor cascade, consisting of five NACA 65-K48 stator profiles, were performed to analyze the flow mechanism of hub-corner separation for the base flow. Experimental validation is used to verify the numerical results. Active control of the hub-corner separation was investigated by using boundary layer suction. The influence of the selected locations of the endwall suction slot was investigated in an effort to quantify the gains of the compressor cascade performance. The results show that the optimal chordwise Location should contain the development section of the three-dimensional corner separation downstream of the 3D corner separation onset. The best pitchwise location should be close enough to the vanes’ suction surface. Therefore the optimal endwall suction location is the MTE slot, the one from 50% to 75% chord at the hub, close to the blade suction surface. By use of the MTE slot with 1% suction flow ratio, the total-pressure loss is substantially decreased by about 15.2% in the CFD calculations and 9.7% in the measurement at the design operating condition.
Item URL in elib: | https://elib.dlr.de/94510/ | ||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||
Title: | Effect of Boundary Layer Suction on Compressor Hub-Corner Separation, Part I: Chord-wise and Pitch-wise Location | ||||||||||||||||||||
Authors: |
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Date: | 16 June 2014 | ||||||||||||||||||||
Journal or Publication Title: | ASME Turbo Expo 2014 | ||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||
Volume: | GT2014 | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | compressor cascade, activ flow-control, suction | ||||||||||||||||||||
Event Title: | ASME Turbo Expo 2014: Turbine Technical Conference and Exposition | ||||||||||||||||||||
Event Location: | Düsseldorf, Germany | ||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||
Event Start Date: | 16 June 2014 | ||||||||||||||||||||
Event End Date: | 20 June 2014 | ||||||||||||||||||||
Organizer: | ASME | ||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||
HGF - Program Themes: | propulsion systems | ||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||
DLR - Program: | L ER - Engine Research | ||||||||||||||||||||
DLR - Research theme (Project): | L - Fan and Compressor Technologies (old) | ||||||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||||||
Institutes and Institutions: | Institute of Propulsion Technology > Engine Acoustic | ||||||||||||||||||||
Deposited By: | Meyer, Dr.-Ing. Robert | ||||||||||||||||||||
Deposited On: | 15 Jan 2015 15:58 | ||||||||||||||||||||
Last Modified: | 24 Apr 2024 20:00 |
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