Plasma Actuator with Multiple Encapsulated Electrodes to Influence the Induced Velocoty

Abstract

A new configuration of plasma actuator, that uses multiple encapsulated electrodes has been compared to a corresponding standard configuration. The velocity fields generated have been recorded using PIV and the voltages and currents recorded. It has been shown that the encapsulated electrode affects the induced jet characteristics. The position to the initial jet has been manipulated as has the initial jet thickness. Velocity is seen to increase linearly along the encapsulated electrode, while momentum coupling has been achieved 15mm downstream of the encapsulated electrode. The magnitude of the induced velocity was also affected with all of the multiple encapsulated electrode actuators producing induced velocities greater than the baseline case. The highest induced velocity was 36.5% greater than the baseline case at the same input voltage while requiring 11.7% less power.