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Effect of the coordination number of the pore-network on the transport and deposition of particles in porous media

机译：孔网络的配位数对多孔介质中颗粒迁移和沉积的影响

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摘要

Effect of the coordination number of the pore-network structure on the transport and deposition of colloidal particles in porous media was investigated. Applying with the orthogonal collocation principle and the pseudo-spectral method based on the Chebyshev polynomial, the complete solutions of the population balance equations describing the deposited particles, the suspended particles and the unblocked pore throats of porous media were obtained for the simple square network and the capillary tube network. It is shown that the network structure of porous media may significantly affect filtration rate, and therefore the effluent concentration and pressure drop. The filter with a capillary tube network structure owns higher filter coefficient than that of the filter with a simple square network structure. Theoretical predictions for different influent concentrations of particles, different flow rates and the case of blocking occurred in the filter bed are in agreement with the available experimental data.
机译：研究了孔网络结构的配位数对多孔介质中胶体颗粒的迁移和沉积的影响。应用正交配位原理和基于Chebyshev多项式的伪谱方法，获得了描述简单方形网络的多孔介质沉积颗粒，悬浮颗粒和无堵塞孔喉的总体平衡方程的完整解。毛细管网络。结果表明，多孔介质的网络结构可能会显着影响过滤速度，从而影响废水的浓度和压降。具有毛细管网络结构的过滤器比具有简单方形网络结构的过滤器具有更高的过滤系数。对于不同的进水颗粒浓度，不同的流速以及在滤床中发生堵塞的情况的理论预测与可用的实验数据相符。

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