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Effect of sorption on solute transport in a single rough rock fracture
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Resurser, energi och infrastruktur.
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, Resurser, energi och infrastruktur.
2017 (engelsk)Inngår i: 13th ISRM International Congress of Rock Mechanics, International Society for Rock Mechanics , 2017Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Sorption process plays a significant role for solute retardation in rock fractures. In this paper, for the aim to investigate the effect of sorption on solute transport in a single rough fracture, a 2D model of representative single rock fracture was built and its roughness was statistically characterized based on the measured data of rock surface topography by laser scanning. A Finite Volume Method (FVM) code was developed to solve the Navier-Stokes (NS) equations and transport equation for numerical modelling the process of fluid flow and solute transport in the rock fracture model. Two groups of simulations were conducted: with and without the consideration of the sorption process with different average flow velocities. The results show that the surface roughness increased the complexities of flow fields, and the non-linear sorption process plays a significant role in the retardation of solute transport through rock fractures. The sorption process caused an obvious lagging time in both the solute concentration fields (plumes) and corresponding breakthrough curves. This lagging time increases with the distance from the inlet boundary, and relatively decreases with the increase of mean velocities.

sted, utgiver, år, opplag, sider
International Society for Rock Mechanics , 2017.
Emneord [en]
Non-linear fluid flow, Rock fractures, Solute transport, Sorption, Surface roughness, Finite volume method, Flow of fluids, Fracture, Navier Stokes equations, Numerical methods, Rock mechanics, Rocks, Surface topography, Break through curve, Non-linear fluids, Rough fractures, Solute concentration fields, Solute retardation, Sorption process, Transport equation, Transport properties
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Identifikatorer
URN: urn:nbn:se:kth:diva-227832Scopus ID: 2-s2.0-85044146675ISBN: 9781926872254 (tryckt)OAI: oai:DiVA.org:kth-227832DiVA, id: diva2:1206530
Konferanse
13th ISRM International Congress of Rock Mechanics 2015, 10 May 2015 through 13 May 2015
Merknad

QC 20180517

Tilgjengelig fra: 2018-05-17 Laget: 2018-05-17 Sist oppdatert: 2018-05-17bibliografisk kontrollert

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Zou, LiangchaoCvetkovic, Vladimir

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Totalt: 295 treff
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