Two sets of actuators with triangular tips on their active electrodes (13 corona and 15 DBD) are studied in the laboratory. Far field ionic wind velocity, mass flow and efficiency are measured for all the actuators. The best electrode shape as function of tip sharpness and tips number/unit length is determined for each of the above measurements. The gas velocity increases downstream of the tips in all the actuators, but the DBD flow has a three-dimensional structure more complicated than for coronas. The tips improve the efficiency of all the actuators, and the stability of coronas is remarkably improved.

Compared ionic wind measurements on multi-tip corona and DBD plasma actuators

BELAN, MARCO;MESSANELLI, FEDERICO
2015-01-01

Abstract

Two sets of actuators with triangular tips on their active electrodes (13 corona and 15 DBD) are studied in the laboratory. Far field ionic wind velocity, mass flow and efficiency are measured for all the actuators. The best electrode shape as function of tip sharpness and tips number/unit length is determined for each of the above measurements. The gas velocity increases downstream of the tips in all the actuators, but the DBD flow has a three-dimensional structure more complicated than for coronas. The tips improve the efficiency of all the actuators, and the stability of coronas is remarkably improved.
2015
Plasma actuator geometry; Corona actuator; DBD actuator; Flow control
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/962038
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