Study on the Transport and Adsorption of Nanoparticles in Porous Media Based on Pore Network Modeling

IF 2.7 3区工程技术 Q3 ENGINEERING, CHEMICAL

Transport in Porous Media Pub Date : 2026-01-07 DOI:10.1007/s11242-025-02274-1

Bing Dong, Haobo Cao, Kunsen Bai, Peng Wang, Dongxu Han, Yujie Chen, Dongliang Sun

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Abstract

The prediction of nanoparticle adsorption in porous media plays a crucial role in both scientific research and engineering applications. A novel pore network model is developed to account for the effects of nanoparticle adsorption on porous media structure. In the proposed model, nanoparticle transport is described by the convective diffusion equation and irreversible kinetic equations to calculate adsorption efficiency. Based on the principle of equal hydraulic conductance, an equivalent contraction coefficient is derived for throat diameter. This coefficient characterizes throat contraction due to nanoparticle adsorption and facilitates accurate simulation of the interplay between adsorption processes and fluid flow. An efficient solution is achieved by estimating and correcting transport conductance coefficients. Using the proposed model, the effects of inlet boundary type, injection velocity, and nanoparticle size on the flow field in porous media are investigated. The results indicate that the developed pore network model can accurately reflect the transport and adsorption of nanoparticles. The destruction of porous media by nanoparticle adsorption can be divided into two stages: deep adsorption and surface adsorption. Different driving forces of flow lead to variations in nanoparticle concentration and pressure distribution within the porous media.

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基于孔隙网络模型的纳米颗粒在多孔介质中的迁移与吸附研究

纳米颗粒在多孔介质中的吸附预测在科学研究和工程应用中都具有重要意义。建立了一种新的孔隙网络模型来解释纳米颗粒吸附对多孔介质结构的影响。该模型采用对流扩散方程和不可逆动力学方程来描述纳米颗粒的输运，计算吸附效率。根据等导水原理，导出了喉道直径的等效收缩系数。该系数表征了纳米颗粒吸附引起的喉部收缩，有助于准确模拟吸附过程与流体流动之间的相互作用。通过估计和修正输运电导系数，得到了一个有效的解决方案。利用该模型，研究了进口边界类型、注射速度和纳米颗粒尺寸对多孔介质中流场的影响。结果表明，所建立的孔隙网络模型能较准确地反映纳米颗粒的运移和吸附过程。纳米颗粒吸附对多孔介质的破坏可分为深层吸附和表面吸附两个阶段。不同的流动驱动力导致多孔介质内纳米颗粒浓度和压力分布的变化。

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来源期刊

Transport in Porous Media 工程技术-工程：化工

CiteScore

5.30

自引率

7.40%

发文量

155

审稿时长

4.2 months

期刊介绍： -Publishes original research on physical, chemical, and biological aspects of transport in porous media- Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)- Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications- Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes- Expanded in 2007 from 12 to 15 issues per year. Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).