Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Aeroacoustic Effect of a Seal Position Attached in Slat Cove Surface
Submission Author:
Fernando H T Himeno , SP
Co-Authors:
Fernando H T Himeno, Filipe Amaral, Marcello Augusto Faraco de Medeiros
Presenter: Marcello Augusto Faraco de Medeiros
doi://10.26678/ABCM.COBEM2017.COB17-2827
Abstract
The development of Environment Regulations observed last decades led to a search for noise reduction of aircrafts. With inclusion of turbofans engines, the airframe noise prove- nient from landing gear, high-lift surfaces as leading edge slat and flap became more represen- tative noise sources. Most studies in slat noise, considers idealized surfaces in order to better understanding of noise mechanism that is still not fully understood. In practice, slat geometry presents excrescences in form of mechanical insulation attached inside its cove. We present a numerical study of the noise produced by slat geometry that includes this seal. Experimental results shows intense change in noise spectra compared to clean slat for some positions of this seal. Patterns of mean flow and nearfield fluctuation are also explored. The software used is the comercial code PowerFLOW based in Lattice-Boltzmann Method.
Keywords
Aeroacoustics, slat, Seal, Lattice Boltzmann Method
