Noise from high-lift leading-edge device

Bassam Rakhshani, Antonio Filippone

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

Abstract

Noise generation from the leading edge system of the aircraft is based on features of the flow in the slat region. Unsteady flow near the slat excites the flow field including mechanisms responsible for noise radiation. Flow separation at the slat cusp, creation of flow vertical system in the slat cove region, and disturbances in the gap between the slat and the main element all cause an acoustic radiation. Time-accurate Unsteady Reynolds Averaged Navier-Stokes (URANS) and Large Eddy Simulation (LES) computations have been used to resolve the transient flow field. The dynamic features of the flow that create slat noise mechanisms are fairly predicted and resolved. For the acoustics the Ffowcs-William and Hawkings (F-WH) equation is solved through the solver (RANS/LES) to capture the acoustic signal at the slat. Acoustic spectra have been plotted in regard to angle of attack variations.
Original languageEnglish
Title of host publication24th AIAAApplied Aerodynamics Conference 5-8 June 2006, San Francisco, California
Place of PublicationReston, Va.
PublisherAmerican Institute of Aeronautics and Astronautics
Number of pages7
Volume1
ISBN (Print)9781563478123
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event24th Applied Aerodynamic Conference -
Duration: 8 May 2006 → …
Conference number: 2006-3844
http://arc.aiaa.org/doi/abs/10.2514/6.2006-3844

Conference

Conference24th Applied Aerodynamic Conference
Period8/05/06 → …
Internet address

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