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A supersonic detonation combustor and its detonation and self-sustaining control method

A technology of combustion chamber and supersonic velocity, applied in the direction of combustion method, deflagration type combustion chamber, combustion chamber, etc., can solve the problems of inconvenient application and difficulty of high-energy thermal jet, and achieve easy detonation successful detonation and energy requirements low effect

Active Publication Date: 2017-05-31
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, it is difficult to obtain high-energy thermal jets in practical applications, and it is relatively inconvenient to apply

Method used

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  • A supersonic detonation combustor and its detonation and self-sustaining control method
  • A supersonic detonation combustor and its detonation and self-sustaining control method
  • A supersonic detonation combustor and its detonation and self-sustaining control method

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Experimental program
Comparison scheme
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Embodiment Construction

[0037] Such as figure 1 As shown, the overall composition structure of the present invention mainly includes thermal jet detonation, cavity setting and expansion wall.

[0038] Fill the circular pipe with oxidant and combustible gas (such as hydrogen and oxygen) through the interface of oxidant and combustible gas. After a certain period of mixing, the spark plug point is used. The premixed gas is ignited and burned to form a high-temperature and high-pressure product, which is ejected at a high speed through a shrinking channel. After that, a hot jet is formed, and the schematic diagram of the hot jet tube is shown in figure 2 shown. In order to speed up the formation of turbulent hot jet, adding spoiler wires in the hot jet tube can promote the flame acceleration process in the tube, which can enhance the intensity of the hot jet to a certain extent.

[0039] The hot jet injected into the supersonic premixed incoming flow first induces the formation of bow shock wave, and...

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PUM

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Abstract

The invention discloses a supersonic velocity detonation combustion chamber and an explosion initiation and self-mastery control method thereof. A recessed cavity structure and an expanded molded surface are adopted, a thermojet detonation initiation system is installed on the upstream wall surface of a recessed cavity, and a function of detonation initiation of supersonic incoming flow and self-mastery communication control can be achieved completely. Thermojet is jetted into the supersonic incoming flow to be first induced to form a bow shock, a subsonic channel is formed, pressure vibration formed in the recessed cavity in the downstream portion of the thermojet acts on the upstream bow shock through the subsonic channel, the intensity of the bow shock is enhanced, and thus detonation initiation is accelerated.

Description

technical field [0001] The invention relates to detonation initiation and stable self-sustaining propagation under the condition of supersonic incoming flow, in particular to the design and realization of a supersonic detonation engine. Background technique [0002] At present, the supersonic detonation combustor and the detonation and self-sustaining method developed in the world are still rare. On the one hand, because the detonation research is currently mainly concentrated in still gas, on the other hand, the detonation initiation and self-sustaining method is carried out under the condition of supersonic flow. Self-sustaining research is quite difficult. There have been related reports on the use of hot jets for detonation initiation in still gas [1-8], and detonation can be directly initiated by strong jets in still gas. However, there are obvious differences between supersonic incoming flow and still gas, and there are relatively few related studies and no related pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/62F02K7/14F02C7/00
CPCF23R7/00
Inventor 蔡晓东梁剑寒林志勇刘世杰陈伟强
Owner NAT UNIV OF DEFENSE TECH