The analysis of acoustic emissions generated by the interaction between the wind and a building�s\nfacade of approximately 90 m high, located in the city of Montevideo, is presented. There is a helipad\non the roof of the building. It is surrounded by a perforated plate (4.87 m high). Once the\nbuilding was finished, complaints about the noise annoyance were expressed by some neighbors\nand working population in the building. Measurements of sound pressure levels on the site have\nbeen done. Also the possible acoustic sources were physically characterized. The noise source was\nidentified: the acoustical emissions were associated with a phenomenon caused by wind speeds\nabove 20 m/s from different directions, generating high sounds pressure levels in octave band of\n4000 Hz, after its passage through the perforated plate on the contour of the roof. These studies\nwere complemented by measurements in wind tunnel using a physical model built with the same\nplate installed in the building, which allowed verifying the results.
Loading....