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dc.contributor.author
Palman, Lucas Emanuel
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dc.contributor.author
Trento, A.
dc.date.available
2024-02-01T14:35:42Z
dc.date.issued
2023-10
dc.identifier.citation
Palman, Lucas Emanuel; Trento, A.; Dispersion coefficients analysis by ADCP measurements, tracer test and numerical simulations; Springer; Environmental Fluid Mechanics; 23; 6; 10-2023; 1381-1402
dc.identifier.issn
1567-7419
dc.identifier.uri
http://hdl.handle.net/11336/225448
dc.description.abstract
The longitudinal and transverse dispersion coefficients of the two-dimensional advection–dispersion model were calculated using velocity and concentration data obtained from tracer tests in a meandering river. The velocity-based dispersion coefficients calculated by applying the theoretical equations to the velocity data were compared with the dispersion coefficients calculated by applying numerical simulation to the measured concentration curves. The results showed that the cross-sectional average values of the dimensionless longitudinal dispersion coefficient KL/ u∗H H calculated from the velocity profiles were of the order of 6.80 (range 1.40–11.0). This value is very close to Elder’s result (5.93) and to the best fit estimated from the concentration curves through numerical simulation. The average dimensionless transversal coefficient calculated by velocity method ranged 0.012–0.66, with reach average of 0.20 while the calibration value estimated by numerical simulation was 0.15. Although at the bend apex, the local velocity method values are up to seven times higher than the average, demonstrating the relevance of secondary currents in the mixing process. On average, the velocity method showed that between the apex of the bend and the straight reach, the transverse dispersion varied up to 4 times while the change in longitudinal dispersion was up to 1.5 times and in the opposite sense.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
2D MIXING MEANDERING CHANNELS
dc.subject
CONCENTRATION DATA
dc.subject
DISPERSION COEFFICIENTS
dc.subject
SHEAR DISPERSION
dc.subject
VERTICAL VELOCITY DEVIATION
dc.subject.classification
Oceanografía, Hidrología, Recursos Hídricos
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Dispersion coefficients analysis by ADCP measurements, tracer test and numerical simulations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-01-31T13:27:03Z
dc.journal.volume
23
dc.journal.number
6
dc.journal.pagination
1381-1402
dc.journal.pais
Alemania
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dc.description.fil
Fil: Palman, Lucas Emanuel. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
dc.description.fil
Fil: Trento, A.. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina
dc.journal.title
Environmental Fluid Mechanics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s10652-023-09956-8
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10652-023-09956-8
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