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Modeling of flow and mixing in 3D rough-walled rock fracture intersections
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
2017 (engelsk)Inngår i: Advances in Water Resources, ISSN 0309-1708, E-ISSN 1872-9657, Vol. 107, s. 1-9Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The processes of fluid flow and solute transport through rock fractures are of primary importance in environmental engineering and geosciences. This study presented numerical modeling results of fluid flow and solute transport in a 3D rock fracture-matrix system with an orthogonal intersection of two rough-walled rock fractures. The rough-walled fracture geometry models were built from laser-scanned data of a real rock surface, for a realistic representation of natural rock fracture surface roughness. The fluid flow in the two intersected fractures and solute transport in the fracture-matrix system were simulated by solving the Navier–Stokes equations (NSE) and transport equation in the entire system. The dependence of mixing on Péclet number (Pe) and flow directionality features were analyzed. The results directly visualized important channeling flow patterns that significantly enhanced the solute mixing process at the rough-walled fracture intersection. The illustrated channeling flow and associated impacts on mixing are particularly important in the prediction of solute transport in natural fractured rocks, especially when discrete fracture network (DFN) approach is applied.

sted, utgiver, år, opplag, sider
Elsevier, 2017. Vol. 107, s. 1-9
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URN: urn:nbn:se:kth:diva-210268DOI: 10.1016/j.advwatres.2017.06.003ISI: 000410674200001Scopus ID: 2-s2.0-85020762478OAI: oai:DiVA.org:kth-210268DiVA, id: diva2:1118289
Merknad

QC 20170630

Tilgjengelig fra: 2017-06-30 Laget: 2017-06-30 Sist oppdatert: 2017-10-10bibliografisk kontrollert

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