Acoustic characteristics of high speed jets with an offset plate

The offset jet configuration is one where the jet is discharged at some distance from a solid surface. Although the geometric configuration may look simple, the flow may involve several complexities. In this work, experimental investigations of offset jets have been performed in an anechoic environment at different nozzle pressure ratios and offset ratios (height of the jet centreline above the plate per nozzle width). A large horizontal plate placed over adjustable stand is used as the offset plate. Acoustic characteristics of free jets and offset jets are compared for different nozzle pressure ratios.