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Simulation of Aircraft Engine Fan Noise Considering Different Types of Flow
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 04, 2014 by SAE International in United States
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This article presents a comparative analysis of the influence of different types of flows over fan noise propagation and scattering within the nacelle intake of aircraft turbofan engines. The methodology for the noise simulation is explained. First, the fan noise source is modeled using a boundary condition that represents all the uncorrelated cut-on modes in the interior of the nacelle duct. Then different types of flows and flight conditions are considered in order to determine the influence of the aerodynamic phenomenon in the noise emitted by the nacelle intake. The liner attenuation is also simulated by mean of Myers boundary condition. Finally the results for far field noise are validated against numerical data obtained from the literature for hard and lined wall conditions.
- Oscar Acosta - Acoustic and Vibrations Laboratory (LVA), Federal University
- Augusto Medeiros - Acoustic and Vibrations Laboratory (LVA), Federal University
- André Spillere - Acoustic and Vibrations Laboratory (LVA), Federal University
- Julio A. Cordioli - Acoustic and Vibrations Laboratory (LVA), Federal University
- Danillo Reis - Embraer S.A.
CitationAcosta, O., Medeiros, A., Spillere, A., Cordioli, J. et al., "Simulation of Aircraft Engine Fan Noise Considering Different Types of Flow," SAE Technical Paper 2014-36-0789, 2014, https://doi.org/10.4271/2014-36-0789.
- OACI. International Civil Aviation Organization Volume 1: Aircraft noise Convention on International Civil Aviation: Environmental Protection, Procedures for the Noise Certification of Aircraft 5th July 2008
- McAlpine , A. , Fisher M. J. , and Tester B. J. Buzz-saw” noise: A comparison of modal measurements with an improved prediction method Journal of Sound and Vibration 306.3 2007 419 443
- Astley , R. Jeremy Numerical methods for noise propagation in moving flows, with application to turbofan engines Acoustical science and technology 30.4 2009 227 239
- Free-Field-Technologies Actran S.A. 2013 Aeroacoustic Solutions: Actran/TM - User's Manual Belgium 2012
- Van Antwerpen , Bernard et al. New advances in the use of ACTRAN/TM for nacelle simulations AIAA Paper 2827 2008 2008
- Mustafi , Prateek Improved turbofan intake liner design and optimization PhD diss. University of Southampton. Faculty of engineering and the environment. Institute of Sound and Vibration Research 2013
- Myers , M. K. On the acoustic boundary condition in the presence of flow Journal of Sound and Vibration 71.3 1980 429 434
- Astley , Jeremy Infinite Elements Computational Acoustics of Noise Propagation in Fluids - Finite and Boundary Element Methods: Finite and Boundary Element Methods Marburg , S. and Nolte , B. 197 228 Springer 2008