Modeling mass transfer in fracture flows with the time domain-random walk method

Show simple item record Kuva, J. Voutilainen, M. Mattila, K. 2019-12-19T13:20:01Z 2019-12-19T13:20:01Z 2019-10
dc.identifier.citation Kuva , J , Voutilainen , M & Mattila , K 2019 , ' Modeling mass transfer in fracture flows with the time domain-random walk method ' , Computational Geosciences , vol. 23 , no. 5 , pp. 953-967 .
dc.identifier.other PURE: 126268264
dc.identifier.other PURE UUID: 3a58c833-e9c2-4885-81c2-925c78ba45e5
dc.identifier.other RIS: urn:EF4B78A28F73FDC85E6A6A3CAA1C0F51
dc.identifier.other RIS: Kuva2019
dc.identifier.other WOS: 000500991300006
dc.identifier.other ORCID: /0000-0002-5534-149X/work/66366899
dc.description.abstract The time domain-random walk method was developed further for simulating mass transfer in fracture flows together with matrix diffusion in surrounding porous media. Specifically, a time domain-random walk scheme was developed for numerically approximating solutions of the advection-diffusion equation when the diffusion coefficient exhibits significant spatial variation or even discontinuities. The proposed scheme relies on second-order accurate, central-difference approximations of the advective and diffusive fluxes. The scheme was verified by comparing simulated results against analytical solutions in flow configurations involving a rectangular channel connected on one side with a porous matrix. Simulations with several flow rates, diffusion coefficients, and matrix porosities indicate good agreement between the numerical approximations and analytical solutions. en
dc.format.extent 15
dc.language.iso eng
dc.relation.ispartof Computational Geosciences
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Advection
dc.subject Breakthrough curve
dc.subject DIFFUSION
dc.subject Matrix diffusion
dc.subject PORE
dc.subject POROSITY
dc.subject POROUS-MEDIA
dc.subject Porous media
dc.subject SIMULATION
dc.subject Simulation
dc.subject Solute transport
dc.subject 116 Chemical sciences
dc.subject 1171 Geosciences
dc.title Modeling mass transfer in fracture flows with the time domain-random walk method en
dc.type Article
dc.contributor.organization Geological disposal of spent nuclear fuel
dc.contributor.organization Department
dc.description.reviewstatus Peer reviewed
dc.relation.issn 1573-1499
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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