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Method for achieving nonuniform combustion field gas parameter quantitative measurement based on modulated spectrum

A technology of gas parameters and modulation spectrum, applied in the field of spectrum measurement, to achieve the effect of simplifying change trends and simplifying data processing

Active Publication Date: 2017-08-11
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Problems solved by technology

[0010] The purpose of the present invention is to solve the problem of quantitative measurement of gas parameters in non-uniform combustion field, and propose a method for quantitative measurement of gas parameters in non-uniform combustion field based on modulation spectrum

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  • Method for achieving nonuniform combustion field gas parameter quantitative measurement based on modulated spectrum
  • Method for achieving nonuniform combustion field gas parameter quantitative measurement based on modulated spectrum
  • Method for achieving nonuniform combustion field gas parameter quantitative measurement based on modulated spectrum

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[0027] specific implementation plan

[0028] The implementation method of the present invention for realizing quantitative measurement of gas parameters in a non-uniform combustion field based on modulation spectrum is further described in detail with reference to the accompanying drawings and examples. figure 1 A flow chart of realizing the quantitative measurement of gas parameters in a non-uniform combustion field based on the modulation spectrum of the present invention is given.

[0029] The implementation scheme of the present invention is as follows: the method of the present invention is divided into three steps, namely the wavelength modulation spectrum measurement step, the wavelength modulation spectrum fitting step, and the gas parameter calculation step in the non-uniform flow field;

[0030] The present invention realizes the realization method of the quantitative measurement of the gas parameters in the non-uniform combustion field based on the modulated spectru...

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Abstract

The invention provides a method for achieving nonuniform combustion field gas parameter quantitative measurement based on the modulated spectrum technology. The method comprises a wavelength modulated spectrum measurement step, a wavelength modulated spectrum fitting step and a step of calculating gas parameters in a nonuniform flow field. According to the specific content of the method, an absorption spectral line with the line strength linearly changing along with temperature within the measured temperature range is selected; transmission light intensity signals are measured through tests, and harmonic signals measured through the tests are obtained; the integral optical density, Gaussion line width and Lorentz line width are adopted as free variables, and the harmonic signals of the spectral line are fit based on the least square method; the gas parameters in the nonuniform combustion field are calculated.

Description

technical field [0001] The invention belongs to the technical field of spectrum measurement, and is a method developed for the quantitative measurement of gas parameters in a non-uniform combustion field. Background technique [0002] At the beginning of the research on the combustion field, most of the combustion fields are non-uniform, and the quantitative measurement of gas parameters in the non-uniform flow field is of great significance for analyzing the combustion efficiency and studying the combustion process. Commonly used measurement methods such as thermocouples and pressure sensors have obvious limitations, such as intrusive measurement disturbing the flow field, easy generation of shock waves, and limited measurement accuracy. The wavelength modulation spectroscopy (WMS) technology involved in the present invention belongs to the spectral measurement technology, which can realize the rapid measurement of gas parameters in the flow field without disturbing the flo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/17
CPCG01N21/171G01N21/1717G01N21/31G01N2021/1725G01N2021/3125G01N2201/06113
Inventor 洪延姬王广宇金星屈东胜宋俊玲
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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