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dc.contributor.authorAraújo, Adérito-
dc.contributor.authorSousa, Ercília-
dc.contributor.authorAlbuquerque, António-
dc.identifier.citationPré-Publicações DMUC. 08-18 (2008)en_US
dc.description.abstractWe present a numerical solution for the dead zone model which describes the solute transport in a subsurface and horizontal flow constructed wetland. This model is a system of two mass balance equations for two conceptual areas: the main channel and the storage zone. We use finite difference schemes to determine the numerical solution of the system and we study its convergence by presenting properties related to the stability and accuracy of the schemes. Concerning the experimental results, the magnitude of the longitudinal dispersion and the extension of dead volumes is estimated for clean conditions and after a certain operating period under organic loading conditions. The results showed a considerable amount of longitudinal dispersion through the bed, which was very strong near the feeding point, indicating the occurrence of mixing and significant presence of dead zones and short-circuiting.en_US
dc.publisherCentro de Matemática da Universidade de Coimbraen_US
dc.subjectFinite differencesen_US
dc.subjectDead zone modelen_US
dc.subjectConstructed wetlanden_US
dc.subjectHydrodynamic characteristicsen_US
dc.titleLongitudinal dispersion in a horizontal subsurface flow constructed wetland: a numerical solutionen_US
item.fulltextCom Texto completo-
item.languageiso639-1en- of Sciences and Technology- of Sciences and Technology- of Coimbra- of Coimbra- - Centre for Mathematics of the University of Coimbra- - Centre for Mathematics of the University of Coimbra-
Appears in Collections:FCTUC Matemática - Vários
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