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dc.contributor.authorMatthews, Christopheren_US
dc.contributor.authorCook, F.en_US
dc.contributor.authorKnight, Johnen_US
dc.contributor.authorBraddock, Rogeren_US
dc.date.accessioned2017-05-03T11:35:47Z
dc.date.available2017-05-03T11:35:47Z
dc.date.issued2005en_US
dc.date.modified2009-08-11T05:52:08Z
dc.identifier.issn00049573en_US
dc.identifier.doi10.1071/SR05069en_AU
dc.identifier.urihttp://hdl.handle.net/10072/4428
dc.description.abstractIn general, the water content (?) form of Richards' equation is not used when modeling water flow through layered soil since ? is discontinuous across soil layers. Within the literature, there have been some examples of models developed for layered soils using the ?-form of Richards' equation. However, these models usually rely on an approximation of the discontinuity at the soil layer interface. For the first time, we will develop an iterative scheme based on Newton's method, to explicitly solve for ? at the interface between 2 soils within a numerical scheme. The numerical scheme used here is the Method of Lines (MoL); however, the principles of the iterative solution could be used in other numerical techniques. It will be shown that the iterative scheme is highly effective, converging within 1 to 2 iterations. To ensure the convergence behaviour holds, the numerical scheme will be tested on a fine-over-coarse and a coarse-over-fine soil with highly contrasting soil properties. For each case, the contrast between the soil types will be controlled artificially to extend and decrease the extent of the ? discontinuity. In addition, the numerical solution will be compared against a steady-state analytical solution and a numerical solution from the literature.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherCSIRO Publishingen_US
dc.publisher.placeCollingwood, Vic.en_US
dc.publisher.urihttp://www.publish.csiro.au/nid/84.htmen_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom945en_US
dc.relation.ispartofpageto955en_US
dc.relation.ispartofissue8en_US
dc.relation.ispartofjournalAustralian Journal of Soil Researchen_US
dc.relation.ispartofvolume43en_US
dc.rights.retentionNen_AU
dc.subject.fieldofresearchcode260599en_US
dc.titleHandling the water content discontinuity at the interface between layered soils within a numerical schemeen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.rights.copyrightCopyright 2005 CSIRO. Please refer to the journal link for access to the definitive, published version.en_AU
gro.date.issued2005
gro.hasfulltextNo Full Text


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