Transverse wave excitation plasma array generator

Abstract

The invention discloses a transverse wave excitation plasma array generator, which comprises a plasma array controller and a controlled molded surface, and is characterized in that the plasma array controller specifically comprises a plurality of plasma generators, and the plasma array controller is installed on the controlled molded surface; and the plasma array controller is specifically used for controlling the plasma generator to generate high-frequency jet flow under the excitation of high-frequency electricity, obtaining high-frequency transverse waves in spatial distribution, generating high-frequency excitation for controlling a second mode of the boundary layer, and promoting the boundary layer of the controlled molded surface to generate transition. According to the invention, the frequency domain boundary of plasma flow control is improved.

Description

technical field [0001] The invention relates to the field of plasma technology, in particular to a shear wave excited plasma array generator. Background technique [0002] The flow state of the boundary layer has a great influence on the heat flow and friction on the surface of the aircraft. In some high-speed aircraft, the dynamic coupling phenomenon between the transition state and the motion / control of the aircraft may also occur, which affects the flight stability of the aircraft and even endangers flight safety. . Therefore, the control of flow transition is one of the key issues in the development of high-speed aircraft. [0003] There are many factors that affect the transition, including flow conditions, surface roughness, and the structural form of the transition zone. The forms of transition can also be divided into natural transition and forced transition. The connotation of this patent mainly refers to the Excitation / control of the second mode of the layer (mai...

AI Technical Summary

Problems solved by technology

Vortex generators are generally arranged on the surface of wings or flaps to generate flow direction vortices, enhance the mixing of main flow and boundary layer flow, and achieve the purpose of inhibiting separation, but they cannot improve performance under different flight conditions; blowing air suction system Energy can be injected into the boundary layer through an external air source, but its size and power consumption are too large; the high-frequency jet energy generated by diaphragm and piezoelectric synthetic jet generators is small, and the jet velocity is small, even if it has been aimed at The effect is amplified through various mechanisms, but the effect is still not enough to meet the practical standard, so it is rarely used in high-speed flow; the piston-type synthetic jet generator can obtain higher energy output, but is limited by Limited to the structural form, the jet frequency cannot reach a high level; in these existing technologies, the upper limit frequency of the plasma excitation technology is the highest, but it is generally lower than 3kHz

[0005] In summary, the above methods cannot fully meet the control requirements for the second mode of the boundary layer from the perspectives of working condition coverage, frequency, intensity, and power

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