What is it about?
The paper presents two enhancements of the efficient broadband time-domain impedance model proposed by Dragna, Pineau, and Blanc-Benon in 2015. The enhanced model is validated by computations of the sound propagation in the NASA Grazing Impedance Tube with turbulent grazing flow and of the attenuation of the noise emitted by a high-bypass-ratio turbofan model, due to acoustic treatment of the fan duct walls.
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This page is a summary of: Unsteady Simulations of Sound Propagation in Turbulent Flow Inside a Lined Duct, AIAA Journal, May 2021, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/1.j060181.
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