Comb-shaped plasma exciter device for improving air film cooling performance and application

The invention discloses a comb-shaped plasma exciter device for improving gas film cooling performance and application, and belongs to the technical field of gas turbine blade gas film cooling. Comprising a low-temperature plasma power supply, an exposed electrode, a buried electrode and an insulating medium, the low-temperature plasma power supply is connected with the bare electrode and the buried electrode; the bare electrode is of a comb-shaped structure, comprises a comb-shaped root part and a comb-shaped tip part and is arranged on the upper surface of the first layer of insulating medium, and the first layer of insulating medium is provided with an air film hole; the buried electrode is of a strip-shaped structure and is arranged on the lower surface of the first layer of insulating medium; the exposed electrode and the buried electrode are asymmetrically arranged, and the distance along the flow direction is S; and the bottom surface of the buried electrode is covered by the second layer of insulating