Multi-channel pulsed arc plasma flow control device and method for promoting boundary layer transition
A technology of pulsed arc and plasma, which is applied in the direction of boundary layer control, aircraft control, and the influence of air flow passing through the surface of the aircraft, etc., which can solve the problems of long pulse interval time, small disturbance area, and inability to generate large-area continuous disturbance. , to increase the size of the disturbance area, promote the transition, and increase the disturbance frequency
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[0067] In this embodiment, the characteristics of boundary layer transition promoted by multi-channel pulsed arc plasma excitation under the condition of supersonic incoming flow (Ma=2) are studied, and the control effect is compared with that of single-channel excitation.
[0068] combine figure 1 and figure 2 , the invention provides a multi-channel pulsed arc plasma excitation flow control device.
[0069] When the supersonic wind tunnel is started, the high-frequency pulse power supply 4 is controlled by the signal delayer, and after the flow field inside the wind tunnel tends to be stable, the high-frequency pulse power supply 4 is triggered to work, and the high-frequency pulse power supply 4 applies pulse voltage to the circuit loop , the voltage is set to 20kV, the discharge frequency is set to 10kHz, the pulse width is 1000ns, and the rising and falling edges are both 50ns.
[0070] In the pulse arc discharge, the first positive electrode 2-1 and the first negative...
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