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dc.contributor.authorWu, Sheng
dc.contributor.authorJeng, Dong-sheng
dc.date.accessioned2018-03-22T00:42:30Z
dc.date.available2018-03-22T00:42:30Z
dc.date.issued2017
dc.identifier.issn1674-2370
dc.identifier.doi10.1016/j.wse.2017.09.001
dc.identifier.urihttp://hdl.handle.net/10072/372012
dc.description.abstractThe effect of soil stratification was studied through numerical investigation based on the coupled model of solute transport in deformable unsaturated soil. The theoretical model implied two-way coupled excess pore pressure and soil deformation based on Biot's consolidation theory as well as a one-way coupled volatile pollutant concentration field developed from the advection-diffusion theory. Embedded in the model, the degree of saturation, fluid compressibility, self-weight of the soil matrix, porosity variance, longitudinal dispersion, and linear sorption were computed. Based on simulation results of a proposed three-layer landfill model using the finite element method, the multi-layer effects are discussed with regard to the hydraulic conductivity, shear modulus, degree of saturation, molecular diffusion coefficient, and thickness of each layer. Generally speaking, contaminants spread faster in a stratified field with a soft and highly permeable top layer; soil parameters of the top layer are more critical than the lower layers but controlling soil thicknesses will alter the results. This numerical investigation showed noticeable impacts of stratified soil properties on solute migration results, demonstrating the importance of correctly modeling layered soil instead of simply assuming the averaged properties across the soil profile.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWater Science and Engineering
dc.relation.ispartofpagefrom184
dc.relation.ispartofpageto196
dc.relation.ispartofissue3
dc.relation.ispartofjournalWater Science and Engineering
dc.relation.ispartofvolume10
dc.subject.fieldofresearchEcology not elsewhere classified
dc.subject.fieldofresearchcode060299
dc.titleNumerical modeling of solute transport in deformable unsaturated layered soil
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionVersion of Record (VoR)
gro.facultyGriffith Sciences, School of Engineering and Built Environment
gro.rights.copyright© 2017 Hohai University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorJeng, Dong-Sheng
gro.griffith.authorWu, Sheng


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