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Upscaling polydispersed particle transport in porous media using pore network model

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Abstract
Understanding particle transport in porous media is critical in the sustainability of many geotechnical and geoenvironmental
infrastructure. To date, the determination of the first-order rate coefficients in the advection?dispersion equation for
simulating attachment and detachment of particles in saturated porous media typically has been relied on the result of
laboratory-scale experiments. However, to determine attachment and detachment coefficients under varied hydraulic and
geochemical variables, this method requires a large experimental matrix because each test provides only one set of
attachment and detachment coefficients. The work performed in this study developed a framework to upscale the results
obtained in pore-scale modeling to the continuum scale through the use of a pore network model. The developed pore
network model incorporated variables of mean particle size, the standard deviation of particle size distribution, and
interparticle forces between particles and sand grains. The obtained retention profiles using the pore network model were
converted into attachment coefficients in the advection?dispersion equation for long-term and large-scale simulation.
Additionally, by tracking individual particles during and after the simulation, the pore network model introduced in this
study can also be employed for modeling the clogging phenomenon, as well as fundamental investigation of the impact of
particle size distribution on particle retention in the sand medium.
Author(s)
원종묵Junghwoon LeeSusan E. Burns
Issued Date
2021
Type
Article
Keyword
First-order coefficientParticle size distributionParticle transportPore networkUpscaling
DOI
10.1007/s11440-020-01038-z
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9190
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_gale_infotracacademiconefile_A650783330&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Upscaling%20polydispersed%20particle%20transport%20in%20porous%20media%20using%20pore%20network%20model&offset=0&pcAvailability=true
Publisher
Acta Geotechnica
Location
독일
Language
영어
ISSN
1861-1125
Citation Volume
16
Citation Number
2
Citation Start Page
421
Citation End Page
432
Appears in Collections:
Engineering > Civil and Environmental Engineering
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