Aeroacoustic Sound Generation of Square Cylinder with Detached Flat Plate in Semi-Anechoic Chamber

Abstract

Airfoil self-noise is produced when unsteady flow interacts with an airfoil surface. Trailing edge noise is one of many types of airfoil self-noise and is considered to be a major noise generation mechanism in many applications that use airfoil shapes including aircraft, submarines and wind turbines. Experimental measurements were taken in the semi anechoic wind tunnel using integrated sound level meter located at four different position: first, second, third and fourth position. Sound level meter were recorded at this different position. Experimental data of this kind would provide further insight into the trailing edge noise mechanism and could be used to validate theoretical noise predictions calculated using computational aeroacoustics techniques.