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Method for adjusting combustion heat release distribution through plasma

A plasma and discharge plasma technology, which is applied in the field of ramjets, can solve the problems of rapid regulation and control of the intensity distribution of combustion heat release in the non-combustible area, and achieve the effect of rapid regulation and reduction of thermal energy consumption.

Pending Publication Date: 2022-03-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this traditional mechanical thermal adjustment method cannot quickly control the combustion heat release rate on the time scale and the distribution of combustion heat release intensity in the combustion zone on the spatial scale.

Method used

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  • Method for adjusting combustion heat release distribution through plasma
  • Method for adjusting combustion heat release distribution through plasma
  • Method for adjusting combustion heat release distribution through plasma

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] like Figure 1-2 As shown, this embodiment provides a method for regulating the distribution of combustion heat release by plasma. In the engine combustion chamber, a plasma acting on the combustion zone is constructed, and a large number of high-energy active particles therein are used to increase the combustion heat release rate; through Changing the spatial distribution of high-energy active particles in the combustion zone affects the development of the flame form from a diffuse state to a high-concentration zone of active particles, causing axial changes in the main combustion zone, and realizing the adjustment of the spatial distribution of the law of combustion heat release.

[0032] In this embodiment, the discharge plasma has a large number of different types of high-energy active particles, which can accelerate physical processes such as fuel diffusion and atomization; because the active groups contained therein can accelerate the process of combustion reaction...

Embodiment 2

[0042] This embodiment is an improvement made on the basis of Embodiment 1, and its improvements are as follows:

[0043] The combustion chamber of the engine is a sub-combustion ramjet combustion chamber, and the method of adjusting the law of combustion heat release distribution is as follows: Figure 3-4 As shown, the engine combustion chamber is generally of the straight section type.

Embodiment 3

[0045] This embodiment is an improvement carried out on the basis of embodiment one or two, and its improvements are as follows:

[0046] The combustion chamber of the engine is a dual-mode ramjet combustion chamber, and the overall shape and structure of the combustion chamber is similar to that of a general scramjet engine.

[0047] Verify this example below:

[0048] (1) air flows into the engine; (2) engine fuel is injected into the engine; (3) the plasma igniter is turned on with a certain excitation intensity of a single power supply, and a stable central flame is formed in the engine combustion chamber; (4) the plasma igniter is converted A certain strong power into the coupling power supply is turned on.

[0049] According to the verification results of the above steps, through the enhanced effect of discharge plasma on combustion heat release, after the plasma igniter is turned on with a certain strong excitation power, the total temperature of the engine along the cou...

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Abstract

The invention discloses a method for adjusting combustion heat release distribution through plasmas, and relates to the technical field of ramjet engines, in an engine combustion chamber, discharge plasmas acting on a combustion area are constructed, and the combustion heat release rate is increased through active particles in the discharge plasmas; and by changing the spatial distribution of the active particles in the combustion area, the flame form development is influenced, the axial change of the combustion area is caused, and the spatial distribution adjustment of the combustion heat release rule is realized. According to the method, the combustion heat release rate on the time scale and the combustion heat release intensity distribution of the combustion area on the space scale can be quickly regulated and controlled, and meanwhile more thermal energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of ramjet engines, in particular to an adjustment method for adjusting the law of heat release distribution in an engine combustion chamber. Background technique [0002] Aircraft engines have different flight performances under different conditions such as flow and altitude, which are closely related to the combustion organization in the combustion chamber. Good combustion organization means stable combustion heat release in the combustion zone and good development of flame shape. The stability and controllability of combustion heat release in the combustion zone is of great value to the safe operation of the engine. Therefore, the realization of the combustion heat release distribution in the engine combustion chamber Adjustment is necessary. The combustion heat release distribution in the combustion chamber is generally changed by changing the fuel staged injection method in the combustion chamber to change the he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M27/04
CPCF02M27/042Y02T10/12
Inventor 唐井峰张浩然李寄周德胜曹轩李佳恒于达仁
Owner HARBIN INST OF TECH