The objective of the present work is the individuation, by means of experimental measurements, of the signatures of different noise sources on the aero-acoustic behavior of a low speed closed-circuit wind tunnel. The study is conducted by anemometric, microphonic and accelerometric measurements. In some cases measurements were conducted simultaneously, placing the probes in several locations along the wind tunnel and for different mean velocities. Data are processed by standard Fourier decompositions and using time-frequency tools for the analysis of transient regimes. The microphonic and accelerometric measurements permitted to select velocity ranges and tunnel components associated to the largest noise emissions and correlated to structural vibrations. The hot wire measurements evidenced that eddies detachement from the comer vanes induces structural excitations with consequent noise emission and weak degradation of the test section flow quality. © 2000 The American Institue of Aeronautics and Astronautics Inc.
|Publication status||Published - 2000|
|Event||6th Aeroacoustics Conference and Exhibit, 2000 - , United States|
Duration: 1 Jan 2000 → …
|Conference||6th Aeroacoustics Conference and Exhibit, 2000|
|Period||1/1/00 → …|
All Science Journal Classification (ASJC) codes
- Aerospace Engineering
- Electrical and Electronic Engineering
- Mechanical Engineering
- Acoustics and Ultrasonics
Camussi, R., Gui, G., Barbagallo, D., & Prischich, D. (2000). Experimental characterization of the aeroacoustic behavior of a low speed wind tunnel. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, United States.