Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/5694
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dc.contributor.authorZhang, Xiaoxianen
dc.contributor.authorDeeks, Lynda Ken
dc.contributor.authorBengough, A Glynen
dc.contributor.authorCrawford, John Wen
dc.contributor.authorYoung, Iainen
dc.date.accessioned2010-04-22T08:51:00Z
dc.date.issued2005en
dc.identifier.citationJournal of Hydrology, v.306, p. 59-70en
dc.identifier.issn0022-1694en
dc.identifier.urihttps://hdl.handle.net/1959.11/5694en
dc.description.abstractA pore-scale modelling of soil hydraulic conductivity using the lattice Boltzmann equation method and thin-section technique is presented in this paper. Two-dimensional thin sections taken from soil samples were used to measure soil pore geometry, and three-dimensional soil structures were then reconstructed based on the thin-section measurements and an assumption that the soil structure can be fully characterised by its porosity and variogram. The hydraulic conductivity of the reconstructed three-dimensional soil structures was calculated from a lattice Boltzmann simulation of water flow in the structures, in which the water-solid interface was treated as a non-slip boundary (zero-velocity boundary) and solved by the bounce-back method. To improve the accuracy of the bounce-back method, the particle distribution functions were located at the centre of the cube that was fully occupied either by water or by solid. The simulated hydraulic conductivity was compared with measured hydraulic conductivity and the results showed good agreement. We also analysed the probability distribution of the simulated water velocity and the results indicated that the transverse velocity components had a non-Gaussian symmetric distribution, while the longitudinal velocity component had a skewed forward distribution. Both distributions had a marked peak for velocity close to zero, indicating a significant portion of stagnant water.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofJournal of Hydrologyen
dc.titleDetermination of soil hydraulic conductivity with the lattice Boltzmann method and soil thin-section techniqueen
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.jhydrol.2004.08.039en
dc.subject.keywordsSoil Sciencesen
dc.subject.keywordsTerrestrial Ecologyen
dc.subject.keywordsSoil Physicsen
dc.subject.keywordsSoil Biologyen
local.contributor.firstnameXiaoxianen
local.contributor.firstnameLynda Ken
local.contributor.firstnameA Glynen
local.contributor.firstnameJohn Wen
local.contributor.firstnameIainen
local.subject.for2008050305 Soil Physicsen
local.subject.for2008060208 Terrestrial Ecologyen
local.subject.for2008050303 Soil Biologyen
local.subject.for2008050399 Soil Sciences not elsewhere classifieden
local.subject.seo2008961402 Farmland, Arable Cropland and Permanent Cropland Soilsen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailiyoung4@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20100225-120336en
local.publisher.placeThe Netherlandsen
local.format.startpage59en
local.format.endpage70en
local.peerreviewedYesen
local.identifier.volume306en
local.contributor.lastnameZhangen
local.contributor.lastnameDeeksen
local.contributor.lastnameBengoughen
local.contributor.lastnameCrawforden
local.contributor.lastnameYoungen
dc.identifier.staffune-id:iyoung4en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:5830en
dc.identifier.academiclevelAcademicen
local.title.maintitleDetermination of soil hydraulic conductivity with the lattice Boltzmann method and soil thin-section techniqueen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.relation.urlhttp://hdl.handle.net/10373/156en
local.description.statisticsepubsVisitors: 564<br />Views: 567<br />Downloads: 0en
local.search.authorZhang, Xiaoxianen
local.search.authorDeeks, Lynda Ken
local.search.authorBengough, A Glynen
local.search.authorCrawford, John Wen
local.search.authorYoung, Iainen
local.uneassociationUnknownen
local.year.published2005en
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