In turbomachinery the tip leakage vortex is an obvious periodic phenomenon associated with rotor blade, its interaction with stator wake will affect the tonal noise level and aerodynamic performance. This study assesses the effects of tip leakage vortex on the stator/rotor interaction tonal noise and its unsteady behavior by 3D unsteady numerical simulations and the Triple-Plane Pressure matching strategy. The fluctuation of blade loading distribution and the interaction of wake negative jet with tip clearance flow change the structure and position of tip leakage vortex and scrapping vortex periodically. From the time-average results, the incoming wakes reduced the strength of vortices. The result also shows that the tonal noise level of turbine stage is decreased with the enlargement of tip clearance.
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ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
June 11–15, 2012
Copenhagen, Denmark
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4474-8
PROCEEDINGS PAPER
Tip Clearance Effects on Unsteady Behavior of the Tip Leakage Vortex and Stator/Rotor Interaction Tonal Noise Available to Purchase
Lei Zhao,
Lei Zhao
Northwestern Polytechnical University, Xi’an, Shaanxi, China
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Wei-Yang Qiao,
Wei-Yang Qiao
Northwestern Polytechnical University, Xi’an, Shaanxi, China
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Zhong-Qiang Mu,
Zhong-Qiang Mu
Northwestern Polytechnical University, Xi’an, Shaanxi, China
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Ping-Ping Chen
Ping-Ping Chen
Northwestern Polytechnical University, Xi’an, Shaanxi, China
German Aerospace Center (DLR), Berlin, Germany
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Lei Zhao
Northwestern Polytechnical University, Xi’an, Shaanxi, China
Wei-Yang Qiao
Northwestern Polytechnical University, Xi’an, Shaanxi, China
Zhong-Qiang Mu
Northwestern Polytechnical University, Xi’an, Shaanxi, China
Ping-Ping Chen
Northwestern Polytechnical University, Xi’an, Shaanxi, China
German Aerospace Center (DLR), Berlin, Germany
Paper No:
GT2012-68549, pp. 1735-1744; 10 pages
Published Online:
July 9, 2013
Citation
Zhao, L, Qiao, W, Mu, Z, & Chen, P. "Tip Clearance Effects on Unsteady Behavior of the Tip Leakage Vortex and Stator/Rotor Interaction Tonal Noise." Proceedings of the ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Volume 8: Turbomachinery, Parts A, B, and C. Copenhagen, Denmark. June 11–15, 2012. pp. 1735-1744. ASME. https://doi.org/10.1115/GT2012-68549
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