Modeling water infiltration into soil under fractional wettability conditions

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dc.contributor.authorDi Prima, Simoneen
dc.contributor.authorStewart, Ryan D.en
dc.contributor.authorAbou Najm, Majdi R.en
dc.contributor.authorYilmaz, Denizen
dc.contributor.authorComegna, Alessandroen
dc.contributor.authorLassabatere, Laurenten
dc.date.accessioned2025-01-16T17:49:56Zen
dc.date.available2025-01-16T17:49:56Zen
dc.date.issued2025-02-01en
dc.description.abstractThe heterogeneous distribution of water-repellent materials at the soil surface causes a phenomenon known as fractional wettability. This condition frequently triggers destabilization of the wetting front during water infiltration, resulting in the formation of fingered bypass flow. However, few analytical tools exist to understand and model this behavior. Moreover, existing infiltration models fail to fit certain infiltration curves that exist in experimental data. For these reasons, we introduce a novel infiltration model to simulate water infiltration under fractional wettable conditions. We conceptualize the soil surface as a composite of two distinct portions: a water-repellent fraction, where hydrophobic effects impede water infiltration, and a wettable fraction, where capillarity and gravity are the dominant forces controlling the process. The new model was validated using a dataset comprising infiltration data from 60 field measurements. Additionally, validation was performed using 660 analytically generated infiltration curves from six synthetic soils with varying textures. This innovative approach enabled us to account for the combined influence of these two fractions and to enhance the interpretation of infiltration curves with mixed shapes, which other common methods are unable to reproduce.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier132309 (Article number)en
dc.identifier.doihttps://doi.org/10.1016/j.jhydrol.2024.132309en
dc.identifier.issn0022-1694en
dc.identifier.orcidStewart, Ryan [0000-0002-9700-0351]en
dc.identifier.urihttps://hdl.handle.net/10919/124230en
dc.identifier.volume647en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectWater infiltrationen
dc.subjectWater repellencyen
dc.subjectFractional wettabilityen
dc.subjectFingered bypass flowen
dc.titleModeling water infiltration into soil under fractional wettability conditionsen
dc.title.serialJournal of Hydrologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherJournal Articleen
pubs.organisational-groupVirginia Techen
pubs.organisational-groupVirginia Tech/Agriculture & Life Sciencesen
pubs.organisational-groupVirginia Tech/All T&R Facultyen
pubs.organisational-groupVirginia Tech/Agriculture & Life Sciences/CALS T&R Facultyen
pubs.organisational-groupVirginia Tech/Agriculture & Life Sciences/School of Plant and Environmental Sciencesen

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