Dielectric barrier discharge plasma exciter and system
A dielectric barrier discharge and plasma technology, applied in the direction of plasma, electrical components, etc., can solve problems affecting the performance and life of insulating media, destroying actuators, etc., to improve flow control performance, optimize control parameters, and high wall jet velocity Effect
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Embodiment 1
[0022] This preferred embodiment provides a dielectric barrier discharge plasma actuator. Such as figure 1 As shown, the actuator at least includes a dielectric body 1 made of insulating material, a first electrode 11 disposed on the surface of the dielectric body 1 , and a second electrode 12 and a third electrode 13 disposed inside the dielectric body 1 . The first electrode 11 , the second electrode 12 and the third electrode 13 are parallel to each other. Under the action of high-frequency high-voltage alternating current between the first electrode 11 and the second electrode 12, the gas discharge generates high-density plasma, and the ions in the plasma obtain a tangential velocity under the strong tangential electric field formed by the third electrode 13, Ions transfer energy to gas molecules through collisions, thereby increasing the wall jet velocity. The above-mentioned high-density plasma preferably has a density higher than 1012 cm-3.
[0023] Among them, the f...
Embodiment 2
[0032] This preferred embodiment provides a dielectric barrier discharge plasma actuator, the structure of which is basically the same as that of the first preferred embodiment. The exciter at least includes a dielectric body made of insulating material, a first electrode arranged on the surface of the dielectric body, and a second electrode and a third electrode arranged inside the dielectric body. The first electrode, the second electrode and the third electrode are parallel to each other. Wherein, the first electrode and the second electrode constitute the first segment, and the second electrode and the third electrode constitute the second segment.
[0033] The difference is: the configuration of the power supply is dual power supply with the same frequency and opposite phase. The first electrode is connected to the first AC voltage source, the third electrode is connected to the second AC voltage source, and the first AC voltage source and the second AC voltage source ha...
Embodiment 3
[0036] This preferred embodiment provides a dielectric barrier discharge plasma actuator, the structure of which is basically the same as that of the first preferred embodiment. The exciter at least includes a dielectric body made of insulating material, a first electrode arranged on the surface of the dielectric body, and a second electrode and a third electrode arranged inside the dielectric body. The first electrode, the second electrode and the third electrode are parallel to each other. Wherein, the first electrode and the second electrode constitute the first segment, and the second electrode and the third electrode constitute the second segment.
[0037] The difference is: the configuration of the power supply is dual power supply and dual frequency. The first electrode is connected to a first AC voltage source with high frequency, the third electrode is connected to a second AC voltage source with a frequency lower than the first AC voltage source, and the second elec...
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