Basic Study on Flow Control by Using Plasma Actuator

Abstract

The airflow induced by corona discharge is called ionic wind, and it could be applied for flow control with its advantages of no moving parts and simple construction. This paper introduces ionic wind characteristics on a flat plate by discharge voltage of 5 kV. A dc corona discharge electrode setup was designed to modify the airflow on a flat plate. The electrode configuration consisted of sharp pin electrode and grounded plate electrode. Weak light emission was observed at the tip of the pin electrode with energizing electrode system. The ionic wind velocity was measured with a hot wire anemometer (up to 2 m/s). Discharge diagnostics included emission spectra, discharge voltage, current, and power and ozone density.Index Terms-Active flow control, corona discharge, electrohydrodynamics (EHD) phenomenon, ionic wind, plasma actuator.

Application of Plasma Actuator with Two Mesh Electrodes to Active Control of Boundary Layer at 50 Hz Power Supply

“…The use of a new technology using DBD (Dielectric Barrier Discharge) to change the fl ow in the Applicatio n of Plasma Actuator with Two Mesh Electrodes to Active Control of Boundary Layer at 50 Hz Power Supply Ernest Gnapowski 1* , Jarosław Pytka 2 , Sebastian Gnapowski 3 , Jerzy Józwik 2 , Paweł Tomiło boundary layer is a relatively new solution [1,2]. The construction of the DBD plasma actuator is not very complicated.…”

Partial Discharge Evolution under Half-sine Voltage Excitation

“…In DC and unipolar condition, space charge accumulation effect should be taken into consideration. Ionic wind is a gas flow phenomenon originating from corona discharge [15], where ions in drift region move in the electric field direction, transmitting their momentum to molecules in the air gap and generating the wind, which will change the space charge distribution on the surface of insulation material [16]- [18].…”