AN EXPERIMENTAL’INVESTIGATION OF COMBUSTION TURBINE EXHAUST NOISE SOURCES

摘要

Combustion related noise and aerodynamic noise have been conjectured to be substantial generators ofcombustion turbine low frequency noise. This study has shown that combustion noise can be the dominantsource when water injection is used to control the production of NO,. Aerodynamic noise sourcesgenerated within the combustion turbine are likely to be the next major contributors of low frequency noise.Sound generated by the combustion turbine’s exhaust jet and flow impacting the rear wall of the exhauststack are likely to be secondary aerodynamic sources.