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Device and method for regulating and controlling tail edge flow of v-shaped flame holder through surface arc plasma excitation

A flame stabilizer and plasma technology, used in the aviation field, can solve the problems of complex mechanical devices and large total pressure loss, and achieve the effect of expanding the flammable boundary and the flame stabilizing boundary

Active Publication Date: 2020-09-04
AIR FORCE UNIV PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, both of these methods have the disadvantages of complex mechanical devices and large total pressure loss.

Method used

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  • Device and method for regulating and controlling tail edge flow of v-shaped flame holder through surface arc plasma excitation
  • Device and method for regulating and controlling tail edge flow of v-shaped flame holder through surface arc plasma excitation

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Embodiment Construction

[0033] now attached figure 1 The method of the present invention is further described. The invention provides a device for regulating and controlling the flow at the trailing edge of a V-shaped flame stabilizer by using surface arc plasma excitation.

[0034] The v-shaped flame stabilizer is in the shape of a groove, and the four walls of the groove include the upper wall, the lower wall, and the left and right walls. The lower wall is placed horizontally, and there is an angle between the upper wall and the lower wall. The V-shape of the part, so it is called "v-shaped" flame stabilizer, and the internal cavity of "v-shaped" flame stabilizer is "v-shaped cavity". The left and right walls respectively clamp the upper and lower walls from the left and right sides, and are fixedly connected with both, and the left and right walls are usually placed parallel to each other. Such as figure 1 As shown, behind the upper and lower walls, there is a rear wall between the upper wall ...

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Abstract

The invention provides a device for regulating and controlling tail edge flow of a v-shaped flame holder through surface arc plasma excitation. The device comprises the v-shaped flame holder, a plasmaexciter and a power source, wherein high-speed high-temperature airflow at a combustion chamber inlet passes through air holes (106) between an upper wall surface and a cylindrical cavity and betweena lower wall surface and the cylindrical cavity and flows into a backflow region (103) inside the flame holder, the air holes (106) are used for conveying air (101) from the outside into a v-shaped cavity to support combustion, and multiple arcs generated by discharge of multiple channels are connected together to form a multichannel arc discharge array. The invention further provides a method for regulating and controlling the tail edge flow of the v-shaped flame holder through surface arc plasma excitation. Through the device and the method, flow separation can be suppressed, the structureand shape of a vortex are changed, the shedding frequency of the vortex is lowered, the size of the backflow region is enlarged, the oil-gas mixing range is expanded, a co-firing region is added, andthe flow quality and stable combustion boundary of the v-shaped flame holder are improved.

Description

technical field [0001] The invention belongs to the plasma flow control technology in the aviation field, and in particular relates to a device and a method for controlling the flow of a V-shaped flame stabilizer by using surface arc plasma excitation. Background technique [0002] The flame stabilizer is a device used to keep the flame stable in the combustion equipment. Among them, the v-shaped flame stabilizer is the most basic blunt body flame stabilizer. It has a simple structure and rich application experience. It is mainly used for flames in subsonic flow fields. Stable, it has achieved a good flame stabilization effect in the combustion chamber of the sub-combustion ramjet engine, and is an indispensable equipment in the combustion chamber of the sub-combustion ramjet engine. The flame stability and combustion efficiency of the flame stabilizer are largely determined by the flow characteristics of the fluid behind the bluff body. When the airflow flows to the stabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/22
CPCF23R3/22
Inventor 贾敏吴云宋慧敏张志波林冬金迪崔巍梁华
Owner AIR FORCE UNIV PLA
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