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Plasma actuator having slotted ventilation structure

A ventilation structure and plasma technology, applied in the field of plasma, can solve the problem of low plasma-induced jet velocity, etc., and achieve the effects of increasing the induced jet velocity and strengthening the excitation intensity

Active Publication Date: 2018-07-03
HARBIN INST OF TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low velocity of the plasma-induced jet produced by the existing plasma actuator, and to provide a plasma actuator with a slotted ventilation structure

Method used

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  • Plasma actuator having slotted ventilation structure
  • Plasma actuator having slotted ventilation structure
  • Plasma actuator having slotted ventilation structure

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specific Embodiment

[0027] combine figure 1 As shown, the width of the dielectric surface electrode 2 is selected to be 4 mm, the width of the channel 1 is 3 mm, the dielectric surface electrode 2 partially covers the channel 1, and the width of the gap formed by the dielectric surface electrode 2 and the side wall of the channel 1 is 0.6 mm. Channel 1 has a depth of 3mm.

[0028] In order to verify the effect of the present invention, the plasma actuator with the same structure as the present invention but without slots is simultaneously measured for the induced velocity:

[0029] Make the power input of the two plasma exciters the same: the voltage is 100V, and the input current is 0.35A. The measured plasma velocity at 10 mm downstream of the electrode 2 on the surface of the medium is: 1.3 m / s for the plasma actuator without slots, and 2.1 m / s for the present invention. It can be seen from calculation that the induction speed of the present invention is relatively increased by 61.5%. This...

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Abstract

A plasma actuator having a slotted ventilation structure belongs to the field of dielectric barrier discharge plasma technology. The present invention is to solve the problem of low plasma induced jetvelocity generated by conventional plasma actuators. The plasma actuator comprises an insulating medium, a dielectric surface electrode disposed on the upper surface of the insulating medium and an embedded electrode horizontally embedded in the insulating medium. The two electrodes are arranged in parallel along the length direction of the insulating medium, and the upper surface of the insulating medium is provided with a channel in the length direction. The channel is located between the two electrodes, and the inner portion of the dielectric surface electrode covers the upper notch of thechannel. The present invention is a plasma actuator that increases the induced jet velocity of plasma.

Description

technical field [0001] The invention relates to a plasma actuator with a slotted ventilation structure, and belongs to the technical field of dielectric barrier discharge plasma. Background technique [0002] As an active flow control device, the dielectric barrier discharge plasma actuator has the advantages of less input energy, simple structure and no moving parts, flexible control, and fast response. With the development of research, plasma actuators have been gradually applied in the fields of flow separation control, transition flow control, and turbulent flow control, and have achieved good control effects. [0003] Existing dielectric barrier discharge plasma actuators are mainly composed of two electrodes and an insulating medium between them, one electrode is exposed to the air, and the other electrode is implanted in the insulating medium. After applying an effective excitation voltage between the two electrodes, the gas above the insulating medium will be ionize...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
CPCH05H1/2406H05H1/2418
Inventor 俞建阳陈浮王钊
Owner HARBIN INST OF TECH
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