Abstract:
An investigation into the induced airflow around weakly ionized surface glow discharge plasma has been performed in initially static air to study radio-frequency plasma actuators designed for the use of boundary-layer control. Hot-wire and cold-wire anemometry have been used to study the velocity and temperature distribution around a symmetric and an asymmetric electrode configuration. The plasma appears to couple momentum into the ambient air such that it drives a laminar wall jet away from the electrode centerline, Temperature measurements indicate an air temperature rise of 2°C at 1 mm from the plasma, and the flow does not appear to be buoyancy driven. A maximum velocity of 2.5 m/s was observed, indicating the induced flow will be strong enough for flow control applications in low-speed test facilities