Investigation of the particle-loaden filtration performance for real fibre media using CFD-DEM

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology Pub Date : 2025-01-01 DOI:10.1016/j.partic.2024.11.015

Jianhua Fan , Xiangqin Wang , Jintong Xu , Kun Yang , Jianglei Chen , Lu Wang , Jinshi Chen

{"title":"Investigation of the particle-loaden filtration performance for real fibre media using CFD-DEM","authors":"Jianhua Fan , Xiangqin Wang , Jintong Xu , Kun Yang , Jianglei Chen , Lu Wang , Jinshi Chen","doi":"10.1016/j.partic.2024.11.015","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, the particle-loaden filtration of real fibre media was numerically studied using computational fluid dynamics (CFD) and discrete element method (DEM) method. The filtration performance was comprehensively analysed by combining fluid and particle properties into a single dimensionless number, Stokes number (<span><math><mrow><mi>S</mi><mi>t</mi></mrow></math></span>). The results indicated that the capture efficiency increased with <span><math><mrow><mi>S</mi><mi>t</mi></mrow></math></span> until it stabilised at a certain limit value, which was in good agreement with the results of the previous empirical laws, confirming the accuracy and reliability of the CFD-DEM algorithm. In addition, the capture contribution of fluid and particle properties were investigated. It was found that increasing particle size and density was effective in improving capture efficiency. Moreover, reducing fluid viscosity was the most favourable condition for improving filtration performance. For the dynamic filtration of particle size <span><math><mrow><msub><mi>d</mi><mi>p</mi></msub><mo>=</mo></mrow></math></span> 2–4 μm, the evolution of the capture efficiency and the pressure drop for <span><math><mrow><msub><mi>d</mi><mi>p</mi></msub></mrow></math></span> = 4 μm was higher than that of other particle sizes due to the easy formation of the dendrite structure. In terms of the quality factor, the fibre layer exhibited a better filtration performance for particles with a diameter of 4.0 μm. This study provided a good understanding of dynamic particle-loaden filtration, which is useful for the optimal design of fibre filters.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"96 ","pages":"Pages 281-293"},"PeriodicalIF":4.1000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Particuology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1674200124002402","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In this paper, the particle-loaden filtration of real fibre media was numerically studied using computational fluid dynamics (CFD) and discrete element method (DEM) method. The filtration performance was comprehensively analysed by combining fluid and particle properties into a single dimensionless number, Stokes number (

S t

). The results indicated that the capture efficiency increased with

S t

until it stabilised at a certain limit value, which was in good agreement with the results of the previous empirical laws, confirming the accuracy and reliability of the CFD-DEM algorithm. In addition, the capture contribution of fluid and particle properties were investigated. It was found that increasing particle size and density was effective in improving capture efficiency. Moreover, reducing fluid viscosity was the most favourable condition for improving filtration performance. For the dynamic filtration of particle size

d_{p} =

2–4 μm, the evolution of the capture efficiency and the pressure drop for

d_{p}

= 4 μm was higher than that of other particle sizes due to the easy formation of the dendrite structure. In terms of the quality factor, the fibre layer exhibited a better filtration performance for particles with a diameter of 4.0 μm. This study provided a good understanding of dynamic particle-loaden filtration, which is useful for the optimal design of fibre filters.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.