Plasma synthetic jet vortex generating device for flow control

Abstract

The invention discloses a plasma synthetic jet vortex generating device for flow control, which comprises a body, the body is arranged in an air inlet channel, the body comprises a generator, the generator is provided with a triangular slope, the triangular slope is provided with a jet hole, a jet exciter is arranged in the generator, and the jet exciter is communicated with the jet hole. And a power supply mechanism is mounted in the jet exciter. The advantages of the plasma synthetic jet exciter and the vortex generator are integrated, the active flow control effect is further improved, the problem that rotational flow distortion in the air inlet channel is difficult to control is solved, the quality of an outlet flow field of the air inlet channel is remarkably improved, meanwhile, the device can adapt to different working conditions, the control effect is good, and the application range is wide. The maximum total pressure recovery of the section of the outlet of the air inlet channel can be generated, and good engineering application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of improving the performance of an intake port, in particular to a plasma synthetic jet vortex generating device for flow control. Background technique [0002] Modern high-performance military fighter jets particularly emphasize high stealth, but the turbine engine of current advanced fighter jets has a large radar reflection area, which is easily captured by the other party's reconnaissance facilities. Therefore, the air intake of fighter jets with high stealth performance is usually a S Bend the tube to block the engine to reduce the reflection of radar waves from the compressor blades. There are complex flow problems in the flow field of the S-bend inlet. In the curved section, the strong reverse pressure gradient caused by the excessive curvature and the expansion of the flow direction will lead to flow separation, and the flow separation will reduce the total pressure recovery coefficient of the outlet...

AI Technical Summary

Problems solved by technology

There are complex flow problems in the flow field of the S-curved inlet. In the curved section, the strong reverse pressure gradient generated by the excessive curvature and the expansion of the flow direction will lead to flow separation, and the flow separation will lead to a decrease in the total pressure recovery coefficient of the outlet section of the inlet. , thereby reducing the thrust of the engine, and in severe cases, it will cause the engine to surge and stall

[0003] In response to this problem, the current flow control of the inlet is mainly divided into two types: active control and passive control. The passive control scheme does not need to provide additional power devices. It has a simple structure and is easy to implement. At present, the most successful It is a vortex generator. A vortex generator with a large size can most effectively reduce the total pressure distortion, but it cannot produce the maximum total pressure recovery. Once the design is completed, it cannot be changed, and it cannot be adjusted independently according to the change of working conditions. It is not easy Satisfy the working requirements of wide envelope, and even under some non-design conditions, the performance of the inlet will be significantly reduced; the active control scheme mainly includes the installation of synthetic jet devices and the suction of the boundary layer, which is widely used and can adapt to Different working conditions, the control effect is good, but the structure is complex, requires additional power, and there are certain difficulties in realization

[0004] Therefore, there is a need for a plasma synthetic jet vortex generator for flow control to solve the problem that the traditional vortex generator cannot produce the maximum total pressure recovery and cannot be adjusted autonomously according to changes in working conditions

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