Construction method and construction device for two-dimensional regular porous medium geometric model

A technology of porous media and geometric models, which is applied in the fields of instruments, calculations, and electrical digital data processing, etc., can solve the problems of poor particle randomness, poor arrangement rules, difficult operation, high cost, etc., and achieve the effect of improving the randomness of position distribution and simple operation

Inactive Publication Date: 2019-08-02
HOHAI UNIV
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Problems solved by technology

At present, although conventional physical imaging methods can restore the characteristics of porous media in natural rock and soil materials, the cost is high and the operation is difficult, and only small-sized models can be obtained; while the porous media models generated by existing numerical methods The particles are less random and arranged regularly, and the ideal shape is not conducive to reflecting the characteristics of complex pore channels

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  • Construction method and construction device for two-dimensional regular porous medium geometric model
  • Construction method and construction device for two-dimensional regular porous medium geometric model
  • Construction method and construction device for two-dimensional regular porous medium geometric model

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0020] Such as figure 1 As shown, the construction method of the two-dimensional regular porous medium geometric model disclosed by the present invention includes:

[0021] (1) Determine the target parameters of the porous media geometric model. The target parameters include: the length and height of the target model generation area, the average particle radius of the particles, the standard deviation of the particle radius distribution, the minimum distance between adjacent particles, the target porosity, the allowable The porosity error range of , the predetermined value of the number of coordinates randomly generated in the first round. In this embodiment, it is set: the length l of the target model generation area is 0.07m, the height h is 0.04m, and the average particle radius of the particles The standard deviation σ of the particle radius distributi...

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Abstract

The invention discloses a construction method of a two-dimensional regular porous medium geometric model. The construction method comprises the steps of determining target parameters of the porous medium geometric model, estimating the number of particles of the target model, randomly generating a particle radius array, determining coordinates of a target circle center for the particles, judging porosity after the coordinates of the target circle center are determined each time, and outputting a model. In addition, the invention further discloses a device for constructing the two-dimensional regular porous medium geometric model. The device comprises a target parameter determination module, a particle quantity estimation module, a radius array generation module, a target circle center coordinate determination module and a porosity judgment output module. According to the method and the device, the porous medium model with different particle sizes, random position distribution and diversified irregular pore channel characteristics can be rapidly generated. For a model with small target porosity and large particle number, the target porous medium model can be generated more effectively by excluding the determined coordinates of the target circle center.

Description

technical field [0001] The invention relates to porous medium model reconstruction, in particular to a construction method and construction device for a two-dimensional regular porous medium geometric model. Background technique [0002] Porous media is a medium composed of solid particle skeleton and pores, and its pores can allow fluids such as liquid or gaseous substances to flow. Paper, fiber, soil, concrete, and biological tissues in daily life are all common porous media, and the research on the internal structure of porous media is also the focus of various fields. In the field of groundwater science, the reconstruction of porous media is the basis for the study of seepage and solute transport of pollutants. The pore structure and pore channel morphology of porous media have an important impact on the migration, mixing and reaction process of pollutants. Reconstruction and A realistic porous media model is critical. At present, although conventional physical imaging...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2111/10G06F30/20
Inventor 窦智张学羿王锦国周志芳陈舟
Owner HOHAI UNIV
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