Series SDBD plasma exciter with shielding electrodes

Abstract

The invention discloses a series SDBD plasma exciter with a shielding electrode. The series SDBD plasma exciter comprises an exposed electrode, a buried electrode, the shielding electrode, a barrier dielectric plate, an insulating dielectric film and an insulating packaging layer, the buried electrode is packaged in the insulating layer; the shielding electrode is electrically connected with the exposed electrode; the blocking dielectric plate is horizontally placed, and the generated ion flow moves horizontally along the surface of the exposed electrode. As the shielding electrode and the bare electrode have the same potential, the shielding electrode can reduce the reverse discharge of the superior buried electrode to the current bare electrode after series connection, and eliminate the airflow circulation area appearing above the air bare electrode. By means of the design, countercurrent electric wind is strongly limited, airflow moves near the wall face, the higher airflow speed can be obtained, and more remarkable propulsive force is generated.

Description

technical field [0001] The invention relates to the field of plasma physics and application and the field of aerodynamics, in particular to a serial SDBD plasma exciter with a shielding electrode. Background technique [0002] SDBD exciter, also known as surface dielectric barrier discharge ion exciter, a typical single SDBD exciter is composed of exposed electrodes, buried electrodes, barrier dielectric plates and insulating packaging layers, two electrodes are placed alternately, high voltage is applied to the exposed electrodes and buried electrodes Between the electrodes, the direction of the induced airflow is directed from the exposed electrode to the buried electrode. For this kind of exciter, the principle of propulsive force lies in the momentum exchange between the directionally moving ion flow and the external air flow. A large number of studies have shown that the biggest disadvantage of the SDBD exciter is the low induced wind speed, which limits the generation...

AI Technical Summary

Problems solved by technology

However, when the airflow is generated, an unsteady vortex will be generated between the two pairs of exposed electrodes. The formation of the vortex will lose part of the energy of the actuator, and the generation of the vortex will be affected by the distance between the electrodes.

At the same time, the electrodes between two adjacent series-connected stages will interfere with each other, producing a reverse driving force, which weakens the overall driving effect

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