Effect of fabric anisotropy on filtration mechanisms in granular filters

IF 2.4 3区工程技术 Granular Matter Pub Date : 2025-02-17 DOI:10.1007/s10035-024-01485-5

Ali Abdallah, Eric Vincens, Hélène Magoariec, Christophe Picault

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Abstract

This study investigates the impact of fabric anisotropy on the directional filtration mechanisms in granular filters, which arise from inherent particle shape variations and different preparation methods. Using the discrete element method, diverse filter samples underwent extensive numerical filtration tests in different directions. Subsequently, the pore space of these samples was analysed using an extraction algorithm. The results highlight the significant influence of particle shapes and preparation methods on intensifying anisotropy, which in turn remarkably affects directional filtration properties. Analysis of the pore space reveals variations in pore connectivity across different directions, explaining the observed differences in retention coefficients. This study emphasises the need for a comprehensive approach that accounts for constriction size, number, and connectivity to yield precise results. It contributes valuable insights into the role of anisotropy in granular materials, sheds light on complex directional filtration mechanisms, and advances related applications.

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来源期刊

Granular Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-MECHANICS

CiteScore

4.30

自引率

8.30%

发文量

期刊介绍： Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science. These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations. >> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa. The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.