Calculation method of internally mixed aerosol light scattering characteristics

A calculation method and gas mixture technology, which can be used in gas diffusion analysis, measurement devices, instruments, etc., and can solve problems such as large errors

Pending Publication Date: 2018-11-30
CIVIL AVIATION UNIV OF CHINA
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Problems solved by technology

At present, when the Monte Carlo method is used to study the multiple scattering characteristics of internally mixed aerosols, for the sake of convenience, it is often assumed that it is a single uniform particle, and the model of internally mixed is not distinguished, which will cause a large error

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  • Calculation method of internally mixed aerosol light scattering characteristics
  • Calculation method of internally mixed aerosol light scattering characteristics
  • Calculation method of internally mixed aerosol light scattering characteristics

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Embodiment Construction

[0059] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0060] A method for calculating the light scattering characteristics of an internally mixed aerosol, characterized in that it comprises the steps of:

[0061] 1) Calculation of single scattering characteristics of internal mixed aerosol:

[0062] According to the mixing model of the internally mixed aerosol, different methods are used to calculate the scattering characteristics of the aerosol particles; the internally mixed aerosol model includes a uniform mixing model and a layered spherical mixing model. For the uniform mixing model, first calculate the particle mixing, etc. Then apply the uniform spherical meter scattering theory to calculate its scattering characteristics; for the layered spherical mixture model, apply the layered spheri...

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Abstract

The invention relates to a calculation method of internally mixed aerosol light scattering characteristics. The calculation method comprises following steps: 1, internally mixed aerosol single time scattering characteristic calculating, wherein based on an internally mixed aerosol model, the single time scattering characteristics of a plurality of types of aerosol particles are calculated; 2, photon state initialization, wherein the coordinates of a photon first scattering position point P1 are determined; 3, photon position and light energy transmission tracking; and 5, calculation of internally mixed aerosol scattering characteristic of each time. According to the calculation method of internally mixed aerosol light scattering characteristics, based on different internally mixed models compose of different component aerosol, Monte Carlo method is adopted for simulation of the transmission process of light in internally mixed aerosol, and scattering and absorption effects of internally mixed aerosol particles on light are taken into consideration, so that the light scattering characteristics of the internally mixed aerosol composed based on different component mixing ratio are obtained.

Description

technical field [0001] The invention relates to a method for calculating the light scattering characteristics of an aerosol in the field of atmospheric optics and laser transmission, in particular to a method for calculating the light scattering characteristics of an internally mixed aerosol. Background technique [0002] With more and more smog weather in China, especially in the heating period in northern my country, the smog weather is more serious. Smog is mainly caused by the combustion of fossil fuels and fossil fuels, and the main aerosol components produced are sulfate and black carbon. A large number of studies have pointed out that sulfate aerosols are hygroscopic particles, which often combine with water in the atmosphere to form uniformly mixed internal mixed particles; while black carbon aerosols are non-hygroscopic particles, but they tend to age slowly over time. As the core part, it will form layered spherical internal mixed particles with water-soluble aero...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
CPCG01N15/00G01N2015/0007
Inventor 马愈昭刘文荣高慧靓熊兴隆
Owner CIVIL AVIATION UNIV OF CHINA
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