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Pore-Scale Flow Effects on Solute Transport in Turbulent Channel Flows Over Porous Media
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Jun Song | - |
dc.contributor.author | Kang, Peter K. | - |
dc.contributor.author | He, Sida | - |
dc.contributor.author | Shen, Lian | - |
dc.contributor.author | Kumar, S. Santosh | - |
dc.contributor.author | Hong, Jiarong | - |
dc.contributor.author | Seo, Il Won | - |
dc.date.accessioned | 2022-06-24T08:37:40Z | - |
dc.date.available | 2022-06-24T08:37:40Z | - |
dc.date.created | 2022-05-13 | - |
dc.date.issued | 2022-01 | - |
dc.identifier.citation | Transport in Porous Media | - |
dc.identifier.issn | 0169-3913 | - |
dc.identifier.uri | https://hdl.handle.net/10371/184143 | - |
dc.description.abstract | © 2021, The Author(s), under exclusive licence to Springer Nature B.V.Abstract: Solute transport and mixing at channel-flow–porous media interfaces are strongly influenced by velocity and turbulence structures near porous media, and such coupled channel-flow–porous media systems are commonly observed in nature. However, the effects of pore-scale flows on solute transport in the coupled systems are currently unclear. In this study, we combine particle image velocimetry experiments and large eddy simulations to resolve the pore-scale flow characteristics over and within a porous bed. Then, we perform solute transport simulations by coupling the pore-scale flow fields with a particle-tracking model and show that the pore-scale flows inherent to porous media structure control solute transport. Pore-scale flow properties such as preferential downward–upward flows and vortices occurring near the channel-flow–porous media interface are shown to exert dominant control over interfacial mass exchange and solute transport. To clarify the effects of pore-scale flows on reach-scale transport, we conduct macroscale transport modeling with a spatially averaged stream-wise velocity profile. Because the profile-based model does not incorporate important pore-scale flow features, it significantly overestimates mass transfer into the porous bed, thereby exacerbating late-time tailings in breakthrough curves. Finally, a spatial Markov model, a type of upscaled stochastic transport model, is shown to effectively capture the pore-scale interfacial transport mechanisms via a velocity transition matrix. Our findings confirm that solute transport through channel-flow–porous media interfaces is controlled not only by interfacial turbulent-mixing profiles but also by detailed pore-scale flow structures. Article Highlights: We demonstrate the effects of pore-scale flows on solute transport in coupled turbulent channel-flow–porous media systemsPore structure near the interface exerts dominant control over interfacial mass exchange and solute transportSpatial Markov model effectively upscales the effects of pore-scale flows on solute transport. | - |
dc.language | 영어 | - |
dc.publisher | Kluwer Academic Publishers | - |
dc.title | Pore-Scale Flow Effects on Solute Transport in Turbulent Channel Flows Over Porous Media | - |
dc.type | Article | - |
dc.identifier.doi | 10.1007/s11242-021-01736-6 | - |
dc.citation.journaltitle | Transport in Porous Media | - |
dc.identifier.wosid | 000748304200001 | - |
dc.identifier.scopusid | 2-s2.0-85123861356 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Seo, Il Won | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
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