Support plate flame stabilizer with fin vortex generators

A vortex generator and flame stabilizer technology, applied in the aviation field, can solve the problems of combustion instability, amplify combustion instability, and affect the combustion reaction process, so as to improve the afterburner combustion efficiency, strengthen the heat and mass convection transmission, and improve the flame The effect of propagation speed

CN113701190AActive Publication Date: 2021-11-26NANCHANG HANGKONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-11-26

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Abstract

The invention relates to a support plate flame stabilizer with fin vortex generators. The support plate flame stabilizer mainly comprises a front edge, a straight section and a V-shaped tail edge, and 3-5 pairs of trapezoidal fin vortex generators are arranged on each of the two side surfaces of the straight section. The support plate flame stabilizer with the fin vortex generators has the advantages and beneficial effects of good flame stability, high flame propagation speed, small flow resistance loss and high combustion efficiency.
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Description

technical field

[0001] The invention relates to a support plate flame stabilizer with a finned vortex generator, which can be used for an integrated afterburner of an aero-engine with a high thrust-to-weight ratio, and belongs to the field of aviation technology. Background technique

[0002] The new-generation afterburning turbofan engine pursues a high thrust-to-weight ratio. In terms of the afterburner, it requires simple parts, low cold flow resistance loss, a small proportion of the length of the afterburner section, and high afterburner efficiency. The afterburner uses a flame stabilizer to stabilize the flame and organize combustion, and the performance of the flame stabilizer is a decisive factor affecting the performance of the afterburner. Most of the new generation of afterburning turbofan engines use an integrated afterburner with an integrated design of rectifying struts and flame stabilizers. However, the conventional support plate flame stabilizer produces Ka...

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Embodiment Construction

[0023] The following will be combined with Figure 1~5 The present invention is described in further detail with embodiment.

[0024] A support plate flame stabilizer with finned vortex generators, 3 to 5 pairs of finned vortex generators 4 are arranged on both sides of the support plate flame stabilizer, specifically 3 pairs in this embodiment, the support plate flame The stabilizer has a chord length of 90 to 150mm, specifically 120mm in this embodiment, and the extension length is determined by a specific engine, specifically 180mm in this embodiment, and is mainly composed of a leading edge 1, a straight section 2, and a V-shaped trailing edge 3. The edge 1 is an elliptical surface, and the major axis of the ellipse is 1.75 to 2.5 times the minor axis. In this embodiment, it is 2 times. The leading edge 1 is tangent to the straight section 2, and the straight section 2 is 18 to 28mm wide. The embodiment is specifically 20mm, the width of the V-shaped trailing edge 3 is 24...