A Design Method of Porous Media Model

Abstract

The invention relates to a porous medium model design method, and belongs to the field of porous material preparation. The porous medium model design method comprises the following steps: proposing aporous medium solid skeleton and pore interface equation, and defining a solid skeleton area and a pore area; establishing a mathematical model between the characteristic parameters of the solid skeleton and pore interface equation and the porous medium structure parameters; compiling a calculation program for solving equation characteristic parameters, inputting porous medium structure parameterdesign values by a user, giving a porous medium model boundary, and outputting solid skeleton and pore interface equation characteristic parameters; constructing a porous medium model topological structure by taking the characteristic parameters as input conditions; and optimizing the grid quality of the surface of the porous medium model topological structure, and exporting a file. The obtained topological structure file can be applied to a plurality of fields such as entity preparation and numerical analysis. According to the method, accurate quantitative control of the porosity, the pore diameter dp and the pore density PPI of porous medium structure parameters can be achieved, and the method is simple and easy to implement. Based on the gradient porous medium model design method provided by the invention, the structural parameters of the porous medium model can realize gradient distribution along any direction.

Description

technical field [0001] The present invention relates to a design method of a porous medium model, more specifically relates to a design method for describing the structure of a porous medium using a mathematical method and constructing a topological structure of a porous medium model, which belongs to the field of porous material preparation. Background technique [0002] my country has surpassed the United States to become the world's largest energy consumer. In terms of energy conservation and emission reduction, on the one hand, use environmental standards to promote energy technology progress and reduce energy consumption per unit of GDP; on the other hand, develop clean combustion technologies. Common low calorific value gases mainly include coke oven gas, blast furnace gas, petroleum-associated gas, low calorific value tail gas and biogas from the chemical industry, etc. Gases with low calorific value usually cannot be directly burned, and are directly discharged into...

AI Technical Summary

Problems solved by technology

Chinese patent CN105967713A proposes a method for preparing a gradient pore ceramic fiber porous medium, but the structural parameters of the designed and prepared gradient pore porous medium cannot be precisely quantitatively controlled, and the repeatability of the design and preparation method is not mentioned.

It can be seen that the existing methods are difficult to realize the quantitative and accurate design of the gradient structural parameters (porosity, pore size and pore density) of porous media.

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