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Nanofluid fuel combustion flame temperature field and concentration field reconstruction method

A technology of burning flames and nanofluids, which is applied to the analysis of nanoparticles, analytical materials, suspensions and porous materials, etc. It can solve the problems of inability to apply time and space resolution, increase the difficulty of measurement operations, etc., and achieve the goal of computer Low requirements, quick results

Inactive Publication Date: 2020-03-10
NANJING UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

The introduction of the TSPD contact measurement method increases the difficulty of the measurement operation, and cannot be applied to working conditions that require high temporal and spatial resolution

Method used

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  • Nanofluid fuel combustion flame temperature field and concentration field reconstruction method
  • Nanofluid fuel combustion flame temperature field and concentration field reconstruction method
  • Nanofluid fuel combustion flame temperature field and concentration field reconstruction method

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Embodiment Construction

[0019] figure 1 It is a system diagram of reconstructing the temperature field, soot particle concentration field and metal oxide nanoparticle concentration field of the symmetrical cross-section of the nanofluid flame based on the apparent light method by a single CCD camera. The cross-section of the flame is divided equally into M rings, assuming that the temperature and concentration parameters in each ring are consistent. Le is the distance between the optical center of the camera and the center of the flame, and 2θ is the viewing angle of the camera. The number of detection lines passing through half the cross-section of the flame is N.

[0020] combine image 3 ,use figure 1 A nanofluid fuel combustion flame temperature field and concentration field reconstruction method of the device, comprising the following steps:

[0021] Step S101, input the radiation intensity values ​​of the R, G, and B channels measured by the CCD camera;

[0022] Step S102, separating the f...

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Abstract

The invention provides a nanofluid fuel combustion flame temperature field and concentration field reconstruction method. The method comprises the steps: 1, separating an upper diagonal matrix L and radiation intensity vectors I lambda 1, I lambda 2 and I lambda 3 into M matrixes, 2, respectively solving temperature distribution, soot particulate matter concentration distribution and metal oxide nanoparticle concentration distribution from the ith ring to the Mth ring by using an LSQR algorithm under the conditions of ignoring self-absorption and considering self-absorption, and step 3, acquiring temperature distribution, soot particulate matter concentration distribution and metal oxide nanoparticle concentration distribution of all rings.

Description

technical field [0001] The invention relates to a detection method for simultaneously containing metal oxide nanoparticles and soot particles, in particular to a method for reconstructing the temperature field and concentration field of a combustion flame of a nanofluid fuel. Background technique [0002] "Energy crisis" and "environmental pollution" are two major problems facing the world today. Adding PPM-level nanoparticles to traditional liquid fuels can not only improve the energy transfer performance of the base fuel and improve combustion efficiency, but also act as a catalyst to reduce the emission of gaseous pollutants such as soot particles and nitrogen oxides. Therefore, nanofluid fuels are expected to replace traditional liquid fuels to achieve energy saving and emission reduction. [0003] In recent years, most researchers' research on nanofluids has focused on enhancing heat transfer, and there are relatively few studies on nanofluid combustion. However, the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N15/06
CPCG01N15/00G01N15/06G01N2015/0038
Inventor 刘冬刘冠楠
Owner NANJING UNIV OF SCI & TECH