Plasma synthetic jet actuator: electrical and optical analysis of the discharge

Electro-mechanical efficiency of plasma synthetic jet actuator driven by capacitive discharge

“…This trend is quite different from that of discharge efficiency and heating efficiency of capacitive discharge, where increasing energy deposition will do harm to their improvement [10,14]. Orifice diameter can be used to tailor the instantaneous mass flow rate, and thus the jet duration time.…”

“…Details on the discharge circuit are available in Zong & Kotsonis [9]. With discharge current chosen as the state variable, the mathematical model of discharge circuit (RLC series circuit) can be simplified as a second-order differential equation [10]. Its typical solution in underdamped condition is a periodically oscillating waveform with declining amplitude as shown in Fig.…”

Joule heating flow control methods for high-speed flows

“…The efficiency of the actuator could be increased more if a power supply of nanopulse in duration was used as this would increase the dissipation rate even more leading to a more powerful jet. Belinger et al 85 carried out further work solely on a CPS based actuator in order to further investigate its properties. They found that the discharge was very conductive and so the current increased rapidly.…”

“…The constant resistance is calculated from equation 13. 85 This simple model could be used to explain some details of the discharge however it is not applicable to the beginning and extinction of the discharge. This is because at these points the resistance of the discharge changes due to the changes in conductivity.…”

Large-Eddy Simulation of Shock-Wave/Turbulent Boundary Layer Interaction and Its Control Using Sparkjet

“…2 is the photographical view of a Laboratory SparkJet device which is a modified version of Cybyk's original invention, experimentally investigated by Reedy et al 21 . Characteristics of this device have been extensively investigated in experimental studies [22][23][24][25][26][27][28][29][30][31] . Fig.…”