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DOI | 10.1002/2016WR019421 |
Experimental investigation of clogging dynamics in homogeneous porous medium | |
Shen, Jikang; Ni, Rui | |
2017-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A 3-D refractive-index matching Lagrangian particle tracking (3D-RIM-LPT) system was developed to study the filtration and the clogging process inside a homogeneous porous medium. A small subset of particles flowing through the porous medium was dyed and tracked. As this subset was randomly chosen, its dynamics is representative of all the rest. The statistics of particle locations, number, and velocity were obtained as functions of different volumetric concentrations. It is found that in our system the clogging time decays with the particle concentration following a power law relationship. As the concentration increases, there is a transition from depth filtration to cake filtration. At high concentration, more clogged pores lead to frequent flow redirections and more transverse migrations of particles. In addition, the velocity distribution in the transverse direction is symmetrical around zero, and it is slightly more intermittent than the random Gaussian curve due to particle-particle and particle-grain interactions. In contrast, as clogging develops, the longitudinal velocity of particles along the mean flow direction peaks near zero because of many trapped particles. But at the same time, the remaining open pores will experience larger pressure and, as a result, particles through those pores tend to have larger longitudinal velocities. |
英文关键词 | clogging filtration refractive-index matching particle tracking |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400160500010 |
WOS关键词 | DEEP-BED FILTRATION ; MICROBIAL TRANSPORT ; VELOCITY ; FILTERS ; SPHERES ; WATER ; FATE ; FLOW |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21063 |
专题 | 资源环境科学 |
作者单位 | Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Shen, Jikang,Ni, Rui. Experimental investigation of clogging dynamics in homogeneous porous medium[J]. WATER RESOURCES RESEARCH,2017,53(3). |
APA | Shen, Jikang,&Ni, Rui.(2017).Experimental investigation of clogging dynamics in homogeneous porous medium.WATER RESOURCES RESEARCH,53(3). |
MLA | Shen, Jikang,et al."Experimental investigation of clogging dynamics in homogeneous porous medium".WATER RESOURCES RESEARCH 53.3(2017). |
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