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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Yu, Wenjun Bu, Huanxian Huang, Xun |
| Copyright Year | 2018 |
| Abstract | Low noise design and testing methods for aeroengine are indispensable for civil aviation industry with the public environmental convern growing and the stringent regulations established. A novel array testing approach is proposed to reconstruct spinning modal fan noise amplitude from scattered sound wave measurements outside the jet flow downstream to an unflanged duct. The proposed approach relies on the forward propagation model based on the Wiener-Hopf method. The key contribution of this work is the development of the inverse acoustic scattering methods using a non-classical beamforming and a compressive sensing strategies. The performance of the proposed strategies are demonstrated with various numerical simulations, which show that the deconvolution method is more generic while the compressive sensing method is more efficient. The reconstruction results from both methods are comparable in terms of accuracy and dynamic range. Overall, the proposed testing approach should be able to extend the current duct acoustic array testing capability and help the design and evaluation of low-noise ducted fan system. |
| Sponsorship | International Gas Turbine Institute |
| File Format | |
| ISBN | 9780791851005 |
| DOI | 10.1115/GT2018-75260 |
| Volume Number | Volume 2B: Turbomachinery |
| Conference Proceedings | ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition |
| Language | English |
| Publisher Date | 2018-06-11 |
| Publisher Place | Oslo, Norway |
| Access Restriction | Subscribed |
| Subject Keyword | Radiation scattering Regulations Spinning (textile) Sound waves Computer simulation Scattering (physics) Ducts Acoustics Noise (sound) Design Spin (aerodynamics) Electromagnetic scattering Commercial air transport Jets Sensors Testing |
| Content Type | Text |
| Resource Type | Article |
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