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Floc identification method and a system based on numerical simulation

A technology of numerical simulation and identification method, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of inability to perform floc statistics and three-dimensional feature analysis, and inability to effectively identify individual flocs, to overcome manpower and material resources. cost-effective effect

Active Publication Date: 2019-02-15
NORTHEASTERN UNIV
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Problems solved by technology

[0004] According to the technical problem that the existing numerical simulation method proposed above cannot effectively identify individual flocs in the flocculation system and cannot perform detailed statistics and three-dimensional feature analysis on the flocs, a method and system for identifying flocs based on numerical simulation is provided

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  • Floc identification method and a system based on numerical simulation
  • Floc identification method and a system based on numerical simulation
  • Floc identification method and a system based on numerical simulation

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Embodiment 2

[0074] Such as Figure 4 , Figure 5 , Figure 6 The example diagram shown is based on the CFD-DEM coupled numerical simulation method. Among the numerical simulation parameters, the effective simulated particle parameters for identifying flocs from the flocculation system are: the total number of particles is 700, and the diameter of all particles is 50 μm.

[0075] The three-dimensional view, +X view, +Y view, and +Z view of the flocculation system based on the numerical simulation results are as follows: Figure 4 As shown, the effective particle parameter information for identifying flocs is exported through DEM software post-processing, specifically including the serial number of all particles, three-dimensional space Cartesian coordinates, and diameter parameter information, and the export format is readable and writable data in Result.csv; through CSV data The read-write module reads and writes particle parameter information from the data, and uses the NUMPY module of...

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Abstract

The invention provides a floc identification method and system based on numerical simulation. A method comprise that following step of: establishing an interaction model between spherical fine particles, numerically simulating a flocculation system at a three-dimensional spatial scale to form a flocculation mix system; performing Geometrical analysis and parameter characterization of the flocculation mixture system formed by numerical simulation. According to the formula of the distance between the spherical center and the radius of the particles in the rectangular coordinate system, judging the cohesive contact between the particles in the flocculation system, and dividing the individual particles and the flocs. wherein The 3D data visualization tool is used to analyze the 3D spatial scale of a single flocculant, and the 3D spatial visualization flocculant recognition is completed. Based on the simulation result of the advanced numerical simulation technology, the invention realizes the digital conversion of the particle flocculation process to the result by reading and writing all the effective parameter information of the particle in the flocculation system, and overcomes the problems of the existing conventional flocculation physical test, such as complex operation, great measurement difficulty and low detection precision.

Description

technical field [0001] The invention relates to the technical field of fine particle flocculation, in particular, to a method and system for identifying flocs based on numerical simulation. Background technique [0002] Fine particle flocculation technology has been widely used in chemical industry, environmental protection, marine, mining and other fields, in which the characteristics of flocs formed by fine particles through flocculation technology directly affect the technical indicators of flocculation process. With the continuous development of DEM (Discrete element method), CFD (Computational fluid dynamics) and computer technology, numerical simulation methods have been gradually applied to the simulation of fine particle flocculation process due to their high efficiency and high precision. The research provides an effective means for optimizing the parameters of the flocculation process and regulating the technical indicators of the flocculation process. [0003] Cu...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 崔宝玉王学涛周晓荣魏德洲赵强张浩孟令国
Owner NORTHEASTERN UNIV
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