Mehrdad Farokhinejad - Phd student of Aerospace engineering, Tarbiat Modares University, Tehran
gholamreza abdizadeh - Phd student of Aerospace engineering, Amirkabir University of Technology,, Tehran
Fathollah ommi - Professor of Aerospace engineering Tarbiat Modares University, Tehran

The goal of this paper is to provide a perspective on the current status and future directions for active flow-control technology with particular emphasis on unsteady control. This is not a comprehensive literature; rather, certain issues that are often neglected in studies are highlighted showing their importance or impact on the reported observations and targeted outcomes. Unsteady DBD plasma actuator is used to control and enhanced the aerodynamic coefficients of NACA۰۰۱۲ airfoil. This active control just conducted at near stall (high) angle of attack to have a better control on plunging motion. Drag coefficient considerably decreased for the unsteady plasma actuator, while the lift factor is almost constant. This means increasing aerodynamic performance. The Momentum coefficient decreased, which indicates a stability increased. With this unsteady actuator having simultaneously both advantages of energy saving benefits and increasing the aerodynamic performance.

DBD plasma actuator, Oscillating airfoil, Flow Control, k-ω SST turbulence method