Combining a thermal tracer with a transport model to estimate shallow flow velocities

Página do item simplificado
dc.contributor.authorAbrantes, João R.C.B.
dc.contributor.authorMoruzzi, Rodrigo B. [UNESP]
dc.contributor.authorde Lima, João L.M.P.
dc.contributor.authorSilveira, Alexandre
dc.contributor.authorMontenegro, Abelardo A.A.
dc.contributor.institutionUniversity of Coimbra
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFederal University of Alfenas
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.date.accessioned2019-10-06T16:11:34Z
dc.date.available2019-10-06T16:11:34Z
dc.date.issued2019-02-01
dc.description.abstractFor a long time, tracer techniques based on dyes, salts and more recently heat have been used to estimate shallow flow velocities. Traditionally, flow velocity estimation using tracers would consist of tracking the movement of the leading edge or the centroid of the tracer with the flow. An alternative methodology uses an analytical solution of an advection–dispersion transport equation as the mathematical foundation for measuring shallow water flow velocity from tracer measurements. The main goal of the present study was to ascertain whether this alternative numerical methodology can be used with temperature data from thermal tracer measurements. Salt and thermal tracer techniques were applied simultaneously by injecting a double tracer of salted-heated water into different shallow flows simulated in a laboratory hydraulic flume. Simulated flows combined different bed surfaces (smooth acrylic sheet, rough sand board and synthetic grass carpet), flow discharges (from 47 to 1239 ml s -1 ) and bed slopes (0.8, 4.4 and 13.2%), resulting in a wide range of hydraulic conditions. Velocities determined with the abovementioned methodology were compared with those estimated by measuring the tracers’ leading edge and centroid and with mean flow velocity calculated using discharge/depth measurements. Results from combining this alternative numerical methodology with thermal tracer data were similar to results from the salt tracer. Also, the proposed alternative numerical methodology predicted the mean flow velocity calculated from discharge/depth measurements better than the measurements of the leading edge and centroid of the tracers.en
dc.description.affiliationMARE - Marine and Environmental Sciences Centre Department of Life Sciences Faculty of Sciences and Technology University of Coimbra, Rua da Matemática, 49
dc.description.affiliationDepartment of Civil Engineering Faculty of Sciences and Technology University of Coimbra, Rua Luís Reis Santos, Pólo II - Universidade de Coimbra
dc.description.affiliationGeoprocessing and Territorial Planning Department Geosciences and Mathematics Institute UNESP – Univ. Estadual Paulista, Avenida 24 A, 1515, Bela Vista
dc.description.affiliationInstitute of Science and Technology Federal University of Alfenas, Rodovia José Aurélio Vilela, 11.999, Campus Avançado de Poços de Caldas
dc.description.affiliationDepartment of Agricultural Engineering Rural Federal University of Pernambuco, Rua Dom Manoel de Medeiros, Dois Irmãos
dc.description.affiliationUnespGeoprocessing and Territorial Planning Department Geosciences and Mathematics Institute UNESP – Univ. Estadual Paulista, Avenida 24 A, 1515, Bela Vista
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação para a Ciência e a Tecnologia
dc.description.sponsorshipFederación Española de Enfermedades Raras
dc.description.sponsorshipIdCNPq: 206872/2014-3
dc.description.sponsorshipIdCNPq: 451227/2016-6
dc.description.sponsorshipIdFederación Española de Enfermedades Raras: SFRH/BD/103300/2014
dc.format.extent59-69
dc.identifierhttp://dx.doi.org/10.1016/j.pce.2018.12.005
dc.identifier.citationPhysics and Chemistry of the Earth, v. 109, p. 59-69.
dc.identifier.doi10.1016/j.pce.2018.12.005
dc.identifier.issn1474-7065
dc.identifier.scopus2-s2.0-85059072057
dc.identifier.urihttp://hdl.handle.net/11449/188544
dc.language.isoeng
dc.relation.ispartofPhysics and Chemistry of the Earth
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAdvection-dispersion transport equation
dc.subjectHydraulic flume
dc.subjectSalt tracer
dc.subjectShallow flow velocity
dc.subjectThermal tracer
dc.titleCombining a thermal tracer with a transport model to estimate shallow flow velocitiesen
dc.typeArtigo
unesp.author.orcid0000-0002-5487-2125 0000-0002-5487-2125[1]
unesp.author.orcid0000-0002-1573-3747 0000-0002-1573-3747[2]

Arquivos

Coleções

Artigos - Planejamento Territorial e Geoprocessamento - IGCE