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The metric used to evaluate the performance of the actuator in each case is the measured actuator-induced thrust which is proportional to the total body force. The maximum body force produced by a SDBD plasma actuator is limited by the formation of streamers in the plasma. Once they form, increasing the applied voltage serves only to increase the power dissipation without significantly increasing the body force For a given actuator, higher saturation body force is obtained by lowering the applied ac frequency. In fact, it is found that saturation body force varies linearly with applied voltage as ac frequency is reduced 4.4.Modeling of Dielectric Barrier Discharge Plasma Actuator BalajiJayaraman*, Young-Chang Cho*,and Wei Shy Glow discharge at atmospheric pressure using a dielectric barrier discharge can induce fluid flow, and operate as an actuator for flow control. In this paper, we simulate the physics of a 2-D asymmetric actuator operating in Helium gas using a high-fidelity first principles-based numerical modeling approach to help improve our understanding of the physical mechanisms associated with such actuators. Fundamentally, there are two processes in the two half-cycles of the actuator operation, largely due to the difference in mobility between faster electrons and slower ions, and the geometric configurations of the DBD/electrodes The first half-cycle is characterized by the deposition of the slower ion species on the insulator surface while the second half-cycle by the deposition of the electrons at a faster rate. A power-law (cubic) dependence on the voltage for the resulting force is observed, which indicates that larger force can be generated by increasing the amplitude There are two different processes in the two half-cycles of the actuator operation, largely due to the difference in mobility between faster electrons and slower ions, and the geometric configurations of the DBD/electrodes. The first half-cycle is characterized by the deposition of the slower ion species on the insulator surface while the second half-cycle by the deposition of the electrons at a faster rate. Regarding the various actuator parameters, the following observations can be summarized 4.5.Turbine Tip Clearance Flow Control using Plasma Actuators Daniel K. Van Ness II,¤Thomas C. Corke,yand Scott C. Morris 12PDF Image | PLASMA FUNCTIONALIZATION OF MULTI-SCALE STRUCTURES
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