A Study on Control of a Circular Jet : Axial Excitation by PVDF Film Actuators

Abstract

Turbulent mixing of a circular jet, which is commonly used in many gas turbine applications, has been studied from the viewpoint of control. The static pressure fluctuation is a basic flow parameter in turbulence. In this study, the vortex structure of the free shear layer in the circular jet is excited by the piezo film actuators. The effect of axial excitation on the turbulent mixing is clarified by simultaneous measurement using hot wire anemometer and static pressure probe.