Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : July 10, 2017 - July 12, 2017
In the present paper the attention is focused on the effect of plasma actuator on aerodynamic sound radiated from two-dimensional airfoil. We measured the aerodynamic sound radiated from the airfoil with plasma actuator near the trailing edge of the airfoil. At the normal airfoil, discrete frequency noise clearly observed at small attack angle. The peak level of spectra for plasma actuator decreased compared with the normal airfoil. The plasma actuator was effective to reduce the discrete frequency noise radiated from airfoil. This noise depended on the actuator location, geometry of electrode and applied frequency of plasma actuator. We have discussed the effective geometry and conditions of plasma actuator to reduce the discrete frequency noise.
