Show simple item record  

dc.contributor.authorShokri, Alien_NZ
dc.contributor.authorBardsley, W. Earlen_NZ
dc.date.accessioned2018-02-07T00:51:23Z
dc.date.available2016-06-01en_NZ
dc.date.available2018-02-07T00:51:23Z
dc.date.issued2016en_NZ
dc.identifier.citationShokri, A., & Bardsley, W. E. (2016). Development, testing and application of DrainFlow : A fully distributed integrated surface-subsurface flow model for drainage study. Advances in Water Resources, 92, 299–315. https://doi.org/10.1016/j.advwatres.2016.04.013en
dc.identifier.issn0309-1708en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/11628
dc.description.abstractHydrological and hydrogeological investigation of drained land is a complex and integrated procedure. The scale of drainage studies may vary from a high-resolution small scale project through to comprehensive catchment or regional scale investigations. This wide range of scales and integrated system behaviour poses a significant challenge for the development of suitable drainage models. Toward meeting these requirements, a fully distributed coupled surface-subsurface flow model titled DrainFlow has been developed and is described. DrainFlow includes both the diffusive wave equation for surface flow components (overland flow, open drain, tile drain) and Richard's equation for saturated/unsaturated zones. To overcome the non-linearity problem created from switching between wet and dry boundaries, a smooth transitioning technique is introduced to buffer the model at tile drains and at interfaces between surface and subsurface flow boundaries. This gives a continuous transition between Dirichlet and Neumann boundary conditions. DrainFlow is tested against five well-known integrated surface-subsurface flow benchmarks. DrainFlow as applied to some synthetic drainage study examples is quite flexible for changing all or part of the model dimensions as required by problem complexity, problem scale, and data availability. This flexibility enables DrainFlow to be modified to allow for changes in both scale and boundary conditions, as often encountered in real-world drainage studies. Compared to existing drainage models, DrainFlow has the advantage of estimating actual infiltration directly from the partial differential form of Richard's equation rather than through analytical or empirical infiltration approaches like the Green and Ampt equation.
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherElsevieren_NZ
dc.rightsThis is an author’s accepted version of an article published in the journal: Advances in Water Resources. © 2016 Elsevier.
dc.subjectScience & Technologyen_NZ
dc.subjectPhysical Sciencesen_NZ
dc.subjectWater Resourcesen_NZ
dc.subjectDrainageen_NZ
dc.subjectPhysically-based modelen_NZ
dc.subjectInteractionen_NZ
dc.subjectLinkeden_NZ
dc.subjectCoupled groundwater surface wateren_NZ
dc.subjectIrrigationen_NZ
dc.subjectWATER-TABLE HEIGHTSen_NZ
dc.subjectSATURATED-UNSATURATED SOILen_NZ
dc.subjectSPACING FORMULAen_NZ
dc.subjectTILE DRAINSen_NZ
dc.subjectSURFACE/SUBSURFACE FLOWen_NZ
dc.subjectBOUSSINESQ EQUATIONen_NZ
dc.subjectHYDROLOGIC RESPONSEen_NZ
dc.subjectHYDRAULIC CONDUCTIVITYen_NZ
dc.subjectAGRICULTURAL DRAINAGEen_NZ
dc.subjectSTOCHASTIC APPROACHen_NZ
dc.titleDevelopment, testing and application of DrainFlow : A fully distributed integrated surface-subsurface flow model for drainage studyen_NZ
dc.typeJournal Article
dc.identifier.doi10.1016/j.advwatres.2016.04.013en_NZ
dc.relation.isPartOfAdvances in Water Resourcesen_NZ
pubs.begin-page299
pubs.elements-id138882
pubs.end-page315
pubs.publication-statusPublisheden_NZ
pubs.volume92en_NZ
dc.identifier.eissn1872-9657en_NZ


Files in this item

This item appears in the following Collection(s)

Show simple item record