Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
WIND TUNNEL BACKGROUND NOISE ASSESSMENT FOR AEROACOUSTICS TESTS
Submission Author:
Odenir de Almeida , MG , Brazil
Co-Authors:
Odenir de Almeida, Lourenço Tércio Lima Pereira, Fernando catalano
Presenter: Odenir de Almeida
doi://10.26678/ABCM.COBEM2019.COB2019-2407
Abstract
This work describes the investigation of noise sources in a low-speed wind tunnel originally design for aerodynamics measurements. Wind tunnel (WT) acoustic evaluation through noise source identification is a key point for remodeling the WT for making it available to perform aeroacoustics measurements through a set or array of microphones inside the test section. Based on this noise assessment the work was challenged to find feasible alternatives for implementing quick improvements in the wind tunnel which could reduce the noise levels inside the test section. Additionally, a literature review about characteristics of worldwide aeroacoustics wind tunnel is presented pointing out to improvements and alternative solutions that maybe considered for the current WT. Results are presented for single and multiple microphones (beamforming technique) placed at different locations in the WT.
Keywords
Wind Tunnel, background noise, Aeroacoustics, Instrumentation, beamforming
