Acoustic radiation of a simplified jet-flap-thrust gate configuration: numerical and experimental investigation

José R.L.N. Sirotto, Julio A. Cordioli, Petrônio A.S. Nogueira, André V.G. Cavalieri, William R. Wolf, Maicon Secchi

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

A comparative study of the acoustic far-field radiation of a subsonic jet near a folded plate with an opening, intended to represent a flapped wing with thrust gate, is presented in this work. Three openings with different widths were used to evaluate experimentally the influence of the gaps in the far-field noise radiation, for two folding angles. Boundary Element Method (BEM) simulations with a wavepacket model to represent the jet acoustic source were both used to calculate the noise far-field for comparison with the patterns found experimentally and for investigating the acoustic field at others points. The BEM simulations showed trends similar to those found experimentally. Through parametric simulations, it was also possible to estimate that openings widths greater than one diameter do not contribute significantly to reducing the far-field noise. The results show that even the smallest tested openings were able to reduce the noise in the far-field for the tested positions.

Original languageEnglish
Title of host publicationAIAA Aviation 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics
Number of pages14
ISBN (Print)9781624105982
DOIs
Publication statusPublished - 2020
Externally publishedYes
EventAIAA Aviation Forum 2020 - Virtual, Online
Duration: 15 Jun 202019 Jun 2020
https://arc.aiaa.org/doi/book/10.2514/MAVIAT20

Publication series

NameAIAA AVIATION 2020 FORUM

Conference

ConferenceAIAA Aviation Forum 2020
CityVirtual, Online
Period15/06/2019/06/20
Internet address

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