CN106326520A - Moisture absorption and reconstruction simulation method and system of black carbon cluster particles based on fractal theory - Google Patents

Abstract

The invention provides a moisture absorption and reconstruction simulation method and system of black carbon cluster particles based on a fractal theory, wherein the method comprises the following steps of building a moisture absorption growth model of black carbon monomers in the black carbon cluster particles according to the moisture absorption growth data of the black carbon aerosol particles; using a DLA model and a moisture absorption growth model to simulate the morphostructure of the black carbon cluster particles; through the matching of the moisture absorption growth data of the black carbon aerosol particles and the simulated morphostructure of the black carbon cluster particles, building a moisture absorption and reconstruction model of the black carbon cluster particles; simulating the moisture absorption and reconstruction process of the black carbon cluster particles by using the DLA model according to the built moisture absorption growth model of the black carbon monomers and the moisture absorption and reconstruction model of the black carbon cluster particles. By using the method and the system, the deformation process of the black carbon cluster particles in damp air can be accurately simulated; the necessary premise can be provided for further and precisely estimating the radiation forcing effect of the black carbon cluster particles.

Description

The moisture absorption reconstruct analogy method of black carbon clusters particle based on fractal theory and system

Technical field

The present invention relates to particle shape structure simulation simulation field, more specifically, relate to a kind of based on dividing The moisture absorption reconstruct analogy method of the black carbon clusters particle that shape is theoretical and system.

Background technology

Since industrialization, mankind's activity is directly to the substantial amounts of particulate matter of airborne release and dusty gas, dirty Dye gas is converted by heterogeneous phase chemical reaction and forms the particulate that particle is less, average life is longer, Particle content in air is continued to increase, has especially increased swifter and more violent since 1950's. This pollution not only can affect climate change, causes Catastrophe climate extreme event to take place frequently, also can serious shadow Ring atmospheric air quality and human health.It addition, biomass fuel and combustion of fossil fuel are (as straw burns Burn, winter is coal-fired and motor vehicle exhaust emission etc.) also result in the concentration of black carbon aerosols particle in air Substantially increase.

The morphosis of black carbon aerosols particle is with the difference of other kinds of particulate, The black carbon particle overwhelming majority being discharged in air by biomass and combustion of fossil fuel is to several by tens The black carbon clusters shape particle that hundred black carbon monomers are constituted.Additionally, due to black carbon aerosols particle is to sun spoke The absorption highly significant penetrated, therefore, black carbon clusters particle radiation characteristic causes atmospheric radiation field at present Extensive concern.

Owing to water has certain surface tension so that black carbon clusters particle is generally of in humid air One layer of water clad, meanwhile, the loosening degree owing to connecting between black carbon monomer allows to a certain extent again Enough water penetration, and newly-generated black carbon clusters morphology of particles is the loosest, therefore, In moist atmosphere, the surface tension of water can reconstruct particle, makes the loose structure of black carbon clusters particle gradually Become consolidation, until to forming dense spheroid, and black carbon clusters particle increases with relative humidity and occurs The phenomenon of moisture absorption reconstruct have also been obtained objective reality.Therefore, black carbon clusters particle is in terms of morphosis Particularity, cause its moisture absorption rising characteristic to be very different with other kinds of particulate, this Change also will affect the radiation characteristic of black carbon clusters particle further.

Black carbon clusters particle is to be formed by many little black carbon monomer aggregation together, although be difficult to gather To the original aggregates of black carbon clusters particle, but can be by transmission electron microscope (Transmission Electron microscope, referred to as TEM) and scanning electron microscope (scanning electron Microscope, referred to as SEM) observe through the black carbon clusters thing that cohesion is formed.Due to equal chi The fractal structure spending black carbon clusters particle is different, and its scattering properties is also distinct, therefore, utilizes Coherent module type simulated black carbon clusters particle structure is that to study the radiation of black carbon clusters particle the most crucial and important Step.Black carbon clusters particle can be regarded monomer motion cohesion as and form, along with the progressively maturation of fractal theory With developing rapidly of computer technology, it is all that the simulation generation of aggregated particle provides many useful theories Foundation and fast and effectively simulation means.At present the interpretation model of cluster particle coacervation phenomenon is mainly had two Kind, i.e. diffusion-restricted cohesion (Diffusion Limited Aggregation, referred to as DLA) model is with dynamic Mechanics group (Cluster-Cluster Aggregation, referred to as CCA) model.

CCA model describes the coacervation process between cluster and cluster, and this model makes all primary particle same Time enter an area of space and make random motion once particle and particle and meet and be formed for particle cluster, this A little particle clusters are met with other particles or particle cluster further and are formed bigger particle cluster, until institute Some primary particle are the most agglomerated together.DLA model is initially by the T.A.Witten of Michigan, United States university Proposing with L.M.Sandert, this model assumes first that a certain central particles invariant position, then from cube Body border, randomly generates a particle, carries out random walk；When particle is collided with central particles when, It is taken as cohesion, records position and the radius of now particle, produce next particle the most again from border and continue Continuous migration；When particle leaves border when, no longer follow the tracks of, and produce next particle；Work as aggregated particle The when that number reaching desirable number, coacervation process terminates.

But above-mentioned CCA model and DLA model are the setting to cluster particle original state and more rely on, Therefore, the setting of reliable cluster particle original state is CCA model and necessity of DLA model application Premise.

Summary of the invention

In view of the above problems, it is an object of the invention to provide a kind of black carbon clusters particle based on fractal theory Moisture absorption reconstruct analogy method, with solve prior art cannot the moisture absorption of simulating black carbon clusters particle exactly The problem of restructuring procedure.

The present invention provides the moisture absorption reconstruct analogy method of a kind of black carbon clusters particle based on fractal theory, bag Include:

Step S1: increase data according to the moisture absorption of black carbon aerosols particle, set up black carbon clusters particle respectively In the moisture absorption model of growth of black carbon monomer, and the moisture absorption reconstruction model of black carbon clusters particle；Wherein, Set up the process of the moisture absorption reconstruction model of black carbon clusters particle, including:

S11: the black carbon clusters particle generated under the conditions of dry air according to DLA modeling；

S12: according to black carbon clusters particle and the moisture absorption of black carbon aerosols particle of simulating generation in step S11 Increase data, obtain black carbon monomer number and black carbon clusters grain in the black carbon clusters particle under the conditions of dry air The corresponding relation of sub-diameter；

S13: according to the moisture absorption model of growth of the black carbon monomer set up, and black carbon list in black carbon clusters particle Body number and the corresponding relation of black carbon clusters particle diameter, utilize DLA modeling in different humidity condition The black carbon clusters particle of lower generation, and the diameter of the black carbon clusters particle of calculating simulation generation；

S14: the moisture absorption of black carbon aerosols particle is increased the black carbon group simulating generation in data and step S13 Bunch particle diameter mates, and sets up the moisture absorption reconstruction model of black carbon clusters particle；

S2: according to moisture absorption model of growth and the suction of black carbon clusters particle of the black carbon monomer set up in step S1 Wet reconstruction model, utilizes the moisture absorption restructuring procedure of DLA modeling black carbon clusters particle.

The present invention also provides for the moisture absorption reconstruct analog systems of a kind of black carbon clusters particle based on fractal theory, Including:

Moisture absorption model of growth sets up unit, increases data for the moisture absorption according to black carbon aerosols particle, builds The moisture absorption model of growth of the black carbon monomer in vertical black carbon clusters particle；

Moisture absorption reconstruction model sets up unit, increases data for the moisture absorption according to black carbon aerosols particle, builds The moisture absorption reconstruction model of vertical black carbon clusters particle；Wherein, moisture absorption reconstruction model sets up unit, including:

First simulation generation module, for the black carbon generated under the conditions of dry air according to DLA modeling Cluster particle；

Corresponding relation acquisition module, for the black carbon clusters grain generated according to the first simulation generation module simulation The moisture absorption of son and black carbon aerosols particle increases data, obtains in the black carbon clusters particle under the conditions of dry air Black carbon monomer number and the corresponding relation of black carbon clusters particle diameter；

Second simulation generation module, for setting up the black carbon monomer of unit foundation according to moisture absorption reconstruction model Black carbon monomer number in moisture absorption model of growth, and the black carbon clusters particle of corresponding relation acquisition module acquisition With the corresponding relation of black carbon clusters particle diameter, DLA modeling is utilized to generate under the conditions of different humidity Black carbon clusters particle；

Particle diameter computing module, for calculating the black carbon clusters grain that the second simulation generation module simulation generates The diameter of son；

Data match module, calculates with particle diameter for the moisture absorption of black carbon aerosols particle is increased data The black carbon clusters particle diameter that unit calculates mates, and sets up the moisture absorption reconstruct mould of black carbon clusters particle Type；

Moisture absorption restructuring procedure analogue unit, for setting up, according to moisture absorption model of growth, the black carbon list that unit is set up The moisture absorption model of growth of body and moisture absorption reconstruction model set up the moisture absorption reconstruct of the black carbon clusters particle that unit is set up Model, utilizes the moisture absorption restructuring procedure of DLA modeling black carbon clusters particle.

The moisture absorption reconstruct mould of above-mentioned based on fractal theory the black carbon clusters particle provided according to the present invention is provided Intend method and system, increase data according to the moisture absorption of the black carbon aerosols particle obtained, utilize fractal theory With the morphosis of moisture absorption growth theory simulating black carbon clusters particle, by the moisture absorption of black carbon aerosols particle Increase mating of the data black carbon clusters particle shape structure with simulation, set up the moisture absorption of black carbon clusters particle Reconstruction model, it is possible to relatively accurately simulating black carbon clusters particle deformation process in humid air, for The most accurately estimate the premise that the Radiative Forcing effect offer of black carbon clusters particle is necessary.

In order to realize above-mentioned and relevant purpose, one or more aspects of the present invention include below will be in detail The feature illustrating and being particularly pointed out in the claims.Description below and accompanying drawing are described in detail this Some bright illustrative aspects.But, the principle that only can use the present invention of these aspects instruction Some modes in various modes.Additionally, it is contemplated that include all these aspect and they etc. Jljl.

Accompanying drawing explanation

By with reference to below in conjunction with the explanation of accompanying drawing and the content of claims, and along with to the present invention Be more fully understood from, other purpose of the present invention and result will be more apparent and should be readily appreciated that.In the accompanying drawings:

Fig. 1 is the moisture absorption reconstruct mould of based on fractal theory the black carbon clusters particle according to the embodiment of the present invention The schematic flow sheet of plan method；

Fig. 2 is that the flow process of the moisture absorption reconstruction model setting up black carbon clusters particle according to the embodiment of the present invention is shown It is intended to；

Fig. 3 is the moisture absorption reconstruct mould of based on fractal theory the black carbon clusters particle according to the embodiment of the present invention The logical structure block diagram of plan system.

The most identical label indicates similar or corresponding feature or function.

Detailed description of the invention

In the following description, for purposes of illustration, complete in order to provide one or more embodiments Foliation solution, elaborates many details.It may be evident, however, that these details can also there is no In the case of realize these embodiments.In other example, for the ease of describing one or more embodiments, Known structure and equipment illustrate in block form an.

Below with reference to accompanying drawing, the specific embodiment of the present invention is described in detail.

Hygroscopicity series connection differential electrical mobility particle size analyzer can be used for studying the hygroscopicity of particulate matter, this point Analyzer can measure little to 1% change of size, can be used for studying particulate matter chemical composition and particulate matter moisture absorption The relativity increased.The present invention is mainly based upon existing by hygroscopicity series connection differential electrical mobility particle diameter The moisture absorption of the black carbon aerosols particle that analyser obtains increases observation data, utilizes fractal theory and moisture absorption to increase The morphosis of long theoretical modeling black carbon clusters particle, increases data by the moisture absorption of black carbon aerosols particle With the mating of black carbon clusters particle shape structure of simulation, set up the moisture absorption reconstruction model of black carbon clusters particle, Can relatively accurately simulating black carbon clusters particle deformation process in humid air.

Fig. 1 shows the moisture absorption weight of based on fractal theory black carbon clusters particle according to embodiments of the present invention The flow process of structure analogy method.As it is shown in figure 1, based on fractal theory the black carbon clusters grain that the present invention provides The moisture absorption reconstruct analogy method of son, specifically includes:

S1: increase observation data according to the moisture absorption of black carbon aerosols particle, set up black carbon clusters particle respectively In the moisture absorption model of growth of black carbon monomer, and the moisture absorption reconstruction model of black carbon clusters particle.

Wherein, the moisture absorption of black carbon aerosols particle increases observation data for utilizing hygroscopicity series connection differential electrical to move The particle diameter that shifting rate particle size analyzer measurement obtains is with the data of relative humidity variations.A concrete reality Executing in mode, it is (relative humidity under the conditions of dry air that the moisture absorption of black carbon aerosols particle increases observation data It is 0%) moisture absorption growth factor HGF and the relative humidity RH of the black carbon aerosols particle of different-diameter Corresponding relation.

It should be noted that black carbon aerosols particle includes black carbon clusters particle, and black carbon clusters particle by Multiple black carbon monomers form.

It addition, the moisture absorption model of growth of black carbon monomer is by the moisture absorption of the black carbon aerosols particle of a diameter of 30nm Growth factor matching obtains, for:

HGF=α (1-RH/100)^-γ

Wherein, γ is model parameter, and α is modifying factor, and HGF is moisture absorption growth factor, and RH is relative Humidity.

30nm is the average diameter of black carbon monomer in black carbon clusters particle, and what 30nm was corresponding is relative humidity Being the particle diameter of 0%, along with relative humidity increases, particle diameter can change.

Fig. 2 shows the stream of the moisture absorption reconstruction model setting up black carbon clusters particle according to embodiments of the present invention Journey.

As in figure 2 it is shown, set up the flow process of the moisture absorption reconstruction model of black carbon clusters particle, including:

S11: the black carbon clusters particle generated under the conditions of dry air according to DLA modeling.

Its detailed process, including:

S111: black carbon clusters particle is respectively provided with certain fractal structure, the Growth kinetics model of its structure All follow the rule of following formula:

$N=k_f{\left(\frac{R_g}{a_{drop}}\right)}^{D_f}$

In formula, the quantity of the spherical single-particle that N is comprised by black carbon clusters particle, k_fFor the forward direction factor, D_fFor fractal dimension, a_dropFor the radius of spherical single-particle, R_gAverage revolution half for black carbon clusters particle Footpath；

$R_g^2=\frac{1}{N}\underset{i=1}{\overset{N}{\Σ}}{(r_i-r_0)}^2+{a_{drop}}^2,r_0=\frac{1}{N}\underset{i=1}{\overset{N}{\Σ}}{r}_i$

Wherein, r_iFor the mass centre of the spherical single-particle of i-th, r₀For the mass centre of black carbon clusters particle, Further, (relative humidity is 0%), k under the conditions of dry air_f=1.19, D_f=1.82, a_drop=15nm.

S112: often increase a spherical single-particle newly, it is fractal that the black carbon clusters particle of generation is satisfied by determining Dimension and the forward direction factor, i.e. walk N step, the mass centre of the spherical single-particle of n-th from N-1 It must is fulfilled for below equation:

${(r_N-r_{N-1}^0)}^2=\frac{N^2{a}_{drop}^2}{N-1}{\left(\frac{N}{k_f}\right)}^{2/D_f}-\frac{{\mathrm{Na}}_{drop}^2}{N-1}-{\mathrm{Na}}_{drop}^2{\left(\frac{N-1}{k_f}\right)}^{2/D_f}$

Wherein,Mass centre for front N-1 spherical single-particle；

When there being new spherical single-particle to be attached on black carbon clusters particle, and ensure spherical single-particle and black carbon Cluster particle is non-overlapping, and at least has a point tangent with black carbon clusters particle, then the trip of this spherical single-particle Walk process to terminate, i.e. adhere to and on black carbon clusters particle；

S113: repeat step S112, adhere to new spherical simple grain on the basis of original black carbon clusters particle Son；

S114: arranging N in 3 to 100 is interval is 1 to carry out value, according to step S111 with step interval The mould of predetermined number example (such as: 1000 examples) black carbon clusters particle corresponding to each N value is completed to S113 Intend generating.

Wherein, 1000 examples are a concrete example, and the present invention can also select other quantity, and such as 500 Example, 2000 examples etc..

S12: increase data according to the moisture absorption of the analog result in step S11 with black carbon aerosols particle, obtain Black carbon monomer number and black carbon group in the black carbon clusters particle of (relative humidity is 0%) under the conditions of taking dry air The corresponding relation of bunch particle diameter.

The detailed process of step S12, including:

S121: according to simulating the black carbon clusters particle of generation in step S11, for each N value, respectively Calculating the diameter of predetermined number example (such as: 1000 examples) black carbon clusters particle, the most black carbon clusters particle is Big projected length；

S122: for each N value, calculates predetermined number example (such as: 1000 examples) black carbon clusters grain respectively The average diameter of son；

S123: predetermined number example (such as: 1000 examples) the black carbon clusters particle that will calculate in step S122 Average diameter and step S121 in predetermined number example (such as: 1000 examples) the black carbon clusters particle that calculates Diameter mate, it is thus achieved that black carbon monomer number and black carbon in the black carbon clusters particle under the conditions of dry air The corresponding relation of cluster particle diameter.

In a concrete example, it is thus achieved that black carbon monomer number in the black carbon clusters particle under the conditions of dry air 3,11,24 and 52 is corresponding with black carbon clusters particle diameter 80nm, 155nm, 240nm and 260nm Relation.But black carbon monomer number is not limited to the value of black carbon clusters particle diameter in black carbon clusters particle In above-mentioned example.

S13: according to the moisture absorption model of growth of the black carbon monomer set up, and black carbon list in black carbon clusters particle Body number and the corresponding relation of black carbon clusters particle diameter, utilize DLA modeling in different humidity condition The black carbon clusters particle of lower generation, and the diameter of the black carbon clusters particle of calculating simulation generation.

The detailed process of step S13, including:

S131: D is set_fBeing 0.01 to carry out value with step interval in 1.82 to 3.00 is interval, RH exists 0% to 95% interval carries out unequal interval value, by the moisture absorption model of growth of the black carbon monomer in step S1 Obtain different black carbon monomer diameter corresponding for RH, then by D_fWith black carbon monomer diameter as input parameter, Utilizing DLA modeling black carbon clusters particle, this black carbon clusters particle is to generate under the conditions of different humidity 's；

It should be noted that RH is the necessary input parameter of black carbon monomer moisture absorption model of growth.D_fWith by black After the carbon monomer calculated moisture absorption of moisture absorption model of growth, black carbon monomer particle diameter is necessity of DLA model Input parameter, after the two parameter input DLA model, so that it may utilize DLA modeling black carbon group Bunch.

S132: for often organizing D_fAnd RH, it is respectively completed predetermined number example (such as: 1000 examples) black carbon group The simulation of bunch particle, and calculate the average straight of this predetermined number example (such as: 1000 examples) black carbon clusters particle Footpath.

S14: the moisture absorption of black carbon aerosols particle is increased the black carbon group simulating generation in data and step S13 Bunch particle diameter mates, and sets up the moisture absorption reconstruction model of black carbon clusters particle.

Wherein, the moisture absorption reconstruction model of the black carbon clusters particle of foundation is:

$D_f(RH,N)=\mathrm{\α}\·{(1-RH/100)}^{(-{\mathrm{\γ}}_1+{\mathrm{\γ}}_2/N)}$

Wherein, γ₁And γ₂For model parameter, α is modifying factor.

S2: according to moisture absorption model of growth and the suction of black carbon clusters particle of the black carbon monomer set up in step S1 Wet reconstruction model, utilizes the moisture absorption restructuring procedure of DLA modeling black carbon clusters particle.

Corresponding with the moisture absorption of above-mentioned black carbon clusters particle based on fractal theory reconstruct analogy method, this The moisture absorption reconstruct analog systems of a kind of black carbon clusters particle based on fractal theory of bright offer.Fig. 3 shows Patrolling of the moisture absorption reconstruct analog systems of based on fractal theory black carbon clusters particle according to embodiments of the present invention Collect structure.

As it is shown on figure 3, the moisture absorption of based on fractal theory the black carbon clusters particle of embodiment of the present invention offer Reconstruct analog systems includes: moisture absorption model of growth sets up unit 310, moisture absorption reconstruction model sets up unit 320 With moisture absorption restructuring procedure analogue unit 330.

Wherein, moisture absorption model of growth sets up unit 310 for the moisture absorption growth according to black carbon aerosols particle Data, set up the moisture absorption model of growth of black carbon monomer in black carbon clusters particle.

Moisture absorption reconstruction model is set up unit 320 and is increased data for the moisture absorption according to black carbon aerosols particle, Set up the moisture absorption reconstruction model of black carbon clusters particle；Wherein, moisture absorption reconstruction model is set up unit 320 and is entered one Step includes:

First simulation generation module 321, for generate under the conditions of dry air according to DLA modeling Black carbon clusters particle；

Corresponding relation acquisition module 322, for the black carbon generated according to the first simulation generation module 321 simulation The moisture absorption of cluster particle and black carbon aerosols particle increases data, obtains the black carbon clusters under the conditions of dry air Black carbon monomer number and the corresponding relation of black carbon clusters particle diameter in particle；

Second simulation generation module 323, for setting up, according to moisture absorption reconstruction model, the black carbon that unit 310 is set up The moisture absorption model of growth of monomer, and corresponding relation acquisition module 322 obtain black carbon clusters particle in black Carbon monomer number and the corresponding relation of black carbon clusters particle diameter, utilize DLA modeling in different humidity Under the conditions of generate black carbon clusters particle；

Particle diameter computing module 324, for calculating the black carbon that the second simulation generation module 323 simulation generates The diameter of cluster particle；

Data match module 325, by increasing the moisture absorption of black carbon aerosols particle based on data and particle diameter The black carbon clusters particle diameter that calculation module 324 calculates mates, and sets up the moisture absorption of black carbon clusters particle Reconstruction model.

Moisture absorption restructuring procedure analogue unit 330, for setting up what unit 310 was set up according to moisture absorption model of growth The moisture absorption model of growth of black carbon monomer and moisture absorption reconstruction model set up the black carbon clusters particle that unit 320 is set up Moisture absorption reconstruction model, utilize the moisture absorption restructuring procedure of DLA modeling black carbon clusters particle.

Foregoing is described in detail by based on fractal theory the black carbon clusters grain that the embodiment of the present invention provides The moisture absorption reconstruct analogy method of son and system, increase data according to the moisture absorption of the black carbon aerosols particle obtained, Utilize fractal theory and the morphosis of moisture absorption growth theory simulating black carbon clusters particle, molten by black carbon gas The moisture absorption of micelle increases mating of the data black carbon clusters particle shape structure with simulation, sets up black carbon group The moisture absorption reconstruction model of bunch particle, it is possible to relatively accurately simulating black carbon clusters particle is in humid air Deformation process, for the most accurately estimating that the Radiative Forcing effect of black carbon clusters particle provides necessary premise.

The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to In this, any those familiar with the art, can be easily in the technical scope that the invention discloses Expect change or replace, all should contain within protection scope of the present invention.Therefore, the protection of the present invention Scope should described be as the criterion with scope of the claims.

Claims (8)

1. a moisture absorption reconstruct analogy method for black carbon clusters particle based on fractal theory, including:

S1: increase data according to the moisture absorption of black carbon aerosols particle, set up respectively in black carbon clusters particle The moisture absorption model of growth of black carbon monomer, and the moisture absorption reconstruction model of black carbon clusters particle；Wherein, set up The process of the moisture absorption reconstruction model of black carbon clusters particle includes:

S11: the black carbon clusters particle generated under the conditions of dry air according to DLA modeling；

S12: according to black carbon clusters particle and the moisture absorption of black carbon aerosols particle of simulating generation in step S11 Increase data, obtain black carbon monomer number and black carbon clusters grain in the black carbon clusters particle under the conditions of dry air The corresponding relation of sub-diameter；

S13: according to the moisture absorption model of growth of the black carbon monomer set up, and black carbon list in black carbon clusters particle Body number and the corresponding relation of black carbon clusters particle diameter, utilize described DLA modeling in different humidity Under the conditions of the black carbon clusters particle that generates, and the diameter of black carbon clusters particle that calculating simulation generates；

S14: the moisture absorption of black carbon aerosols particle is increased the black carbon group simulating generation in data and step S13 Bunch particle diameter mates, and sets up the moisture absorption reconstruction model of black carbon clusters particle；

S2: according to moisture absorption model of growth and the suction of black carbon clusters particle of the black carbon monomer set up in step S1 Wet reconstruction model, utilizes the moisture absorption restructuring procedure of described DLA modeling black carbon clusters particle.

2. the moisture absorption reconstruct simulation side of black carbon clusters particle based on fractal theory as claimed in claim 1 Method, in step sl, the moisture absorption of the black carbon aerosols particle of acquisition increases data and is:

The moisture absorption growth factor of the black carbon aerosols particle of different-diameter and relative humidity under the conditions of dry air Corresponding relation, and,

The moisture absorption model of growth of described black carbon monomer is by the moisture absorption of the black carbon aerosols particle of a diameter of 30nm Growth factor matching obtains: HGF=α (1-RH/100)^-γ；

Wherein, HGF is moisture absorption growth factor, and RH is relative humidity, and γ is model parameter, and α is for revising The factor.

3. the moisture absorption reconstruct simulation side of black carbon clusters particle based on fractal theory as claimed in claim 2 Method, in step s 13, farther includes:

S131: preset D_fBeing 0.01 to carry out value with step interval in 1.82 to 3.00 is interval, RH exists 0% to 95% interval carries out unequal interval value, increases mould according to the moisture absorption of the black carbon monomer in step S1 Type obtains different black carbon monomer diameter corresponding for RH, by D_fWith black carbon monomer diameter as input parameter, Utilize described DLA modeling black carbon clusters particle；

S132: for often organizing D_fAnd RH, it is respectively completed the simulation of predetermined number example black carbon clusters particle, And calculate the average diameter of described predetermined number example black carbon clusters particle.

4. the moisture absorption reconstruct simulation side of black carbon clusters particle based on fractal theory as claimed in claim 2 Method, in step S14, the moisture absorption reconstruction model of the black carbon clusters particle of foundation is:

$D_f(RH,N)=\mathrm{\α}\·{(1-RH/100)}^{(-{\mathrm{\γ}}_1+{\mathrm{\γ}}_2/N)};$

Wherein, γ₁And γ₂For model parameter, α is modifying factor.

5. the moisture absorption reconstruct simulation side of black carbon clusters particle based on fractal theory as claimed in claim 1 Method, in step s 11, farther includes:

S111: the create-rule of black carbon clusters particle is:

$N=k_f{\left(\frac{R_g}{a_{drop}}\right)}^{D_f},R_g^2=\frac{1}{N}\underset{i=1}{\overset{N}{\Σ}}{(r_i-r_0)}^2+{a_{drop}}^2,r_0=\frac{1}{N}\underset{i=1}{\overset{N}{\Σ}}{r}_i;$

Wherein, the quantity of the spherical single-particle that N is comprised by black carbon clusters particle, k_fFor the forward direction factor, D_fFor fractal dimension, a_dropFor the radius of spherical single-particle, R_gAverage revolution half for black carbon clusters particle Footpath, r_iFor the mass centre of the spherical single-particle of i-th, r₀For the mass centre of black carbon clusters particle, and, Under the conditions of dry air, k_f=1.19, D_f=1.82, a_drop=15nm；

S112: often increase a spherical single-particle newly, the black carbon clusters particle of generation meets following regular:

${(r_N-r_{N-1}^0)}^2=\frac{N^2{a}_{drop}^2}{N-1}{\left(\frac{N}{k_f}\right)}^{2/D_f}-\frac{{\mathrm{Na}}_{drop}^2}{N-1}-{\mathrm{Na}}_{drop}^2{\left(\frac{N-1}{k_f}\right)}^{2/D_f};$

Wherein,Mass centre for front N-1 spherical single-particle；

S113: repeat step S112, adhere to new spherical single-particle on the basis of original black carbon clusters particle；

S114: presetting N in 3 to 100 is interval is 1 to carry out value, according to step S111 with step interval The simulation completing predetermined number example black carbon clusters particle corresponding to each N value to S113 generates.

6. the moisture absorption reconstruct simulation side of black carbon clusters particle based on fractal theory as claimed in claim 5 Method, in step s 12, farther includes:

S121: according to simulating the black carbon clusters particle of generation in step S11, for each N value, respectively Calculate the diameter of predetermined number example black carbon clusters particle；

S122: for each N value, calculate the average straight of described predetermined number example black carbon clusters particle respectively Footpath；

S123: average diameter and the black carbon clusters grain of calculating in step S121 that will calculate in step S122 The diameter of son mates, it is thus achieved that in the black carbon clusters particle under the conditions of dry air, black carbon monomer number is with black The corresponding relation of carbon clusters particle diameter.

7. the moisture absorption reconstruct simulation side of black carbon clusters particle based on fractal theory as claimed in claim 1 Method, in step sl, the moisture absorption of black carbon aerosols particle increases data and is:

The described black carbon aerosols particle utilizing hygroscopicity series connection differential electrical mobility particle size analyzer to record is straight Footpath is with the data of relative humidity variations.

8. a moisture absorption reconstruct analog systems for black carbon clusters particle based on fractal theory, including:

Moisture absorption model of growth sets up unit, increases data for the moisture absorption according to black carbon aerosols particle, builds The moisture absorption model of growth of the black carbon monomer in vertical black carbon clusters particle；

Moisture absorption reconstruction model sets up unit, increases data for the moisture absorption according to black carbon aerosols particle, builds The moisture absorption reconstruction model of vertical black carbon clusters particle；Wherein, described moisture absorption reconstruction model sets up unit, including:

First simulation generation module, for the black carbon generated under the conditions of dry air according to DLA modeling Cluster particle；

Corresponding relation acquisition module, for the black carbon group generated according to described first simulation generation module simulation The moisture absorption of bunch particle and black carbon aerosols particle increases data, obtains the black carbon clusters grain under the conditions of dry air Black carbon monomer number and the corresponding relation of black carbon clusters particle diameter in son；

Second simulation generation module, for setting up, according to described moisture absorption reconstruction model, the black carbon list that unit is set up Black carbon in the moisture absorption model of growth of body, and the black carbon clusters particle of described corresponding relation acquisition module acquisition Monomer number and the corresponding relation of black carbon clusters particle diameter, utilize described DLA modeling in DIFFERENT WET The black carbon clusters particle generated under the conditions of degree；

Particle diameter computing module, for calculating the black carbon group that described second simulation generation module simulation generates The diameter of bunch particle；

Data match module, for increasing data and described particle diameter by the moisture absorption of black carbon aerosols particle The black carbon clusters particle diameter that computing unit calculates mates, and sets up the moisture absorption weight of black carbon clusters particle Structure model；

Moisture absorption restructuring procedure analogue unit, for setting up the black of unit foundation according to described moisture absorption model of growth The moisture absorption model of growth of carbon monomer and described moisture absorption reconstruction model set up the black carbon clusters particle of unit foundation Moisture absorption reconstruction model, utilizes the moisture absorption restructuring procedure of black carbon clusters particle described in described DLA modeling.