Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows

One of first practical definitions for numerical solutions of classical model of Advection-Dispersion was the Elder's equation developed in 1959. This relationship based on the theoretical guidance proposed by G.I. Taylor for long, straight pipes, extent successfully the method for the case of...

Full description

Autores:
Constain Aragon, Alfredo Jose
Tipo de recurso:
Article of journal
Fecha de publicación:
2014
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/48906
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/48906
http://bdigital.unal.edu.co/42363/
Palabra clave:
Dispersion
Gaussian dynamics
water quality studies
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_bf8f140d9065e963f03754ed6bc9390e
oai_identifier_str oai:repositorio.unal.edu.co:unal/48906
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Constain Aragon, Alfredo Jose1619f7ca-a59b-4f78-8baf-ea060aa0a5723002019-06-29T08:12:21Z2019-06-29T08:12:21Z2014-08-25https://repositorio.unal.edu.co/handle/unal/48906http://bdigital.unal.edu.co/42363/One of first practical definitions for numerical solutions of classical model of Advection-Dispersion was the Elder's equation developed in 1959. This relationship based on the theoretical guidance proposed by G.I. Taylor for long, straight pipes, extent successfully the method for the case of ideal prismatic, wide channels in open flow. However, wishing to apply it to real cases with varied geometry the results were not satisfactory due to several reasons which will be examined in this article. This limiting situation for the equation is inconvenient for two reasons: First, whatsoever it is a very used equation due to its simplicity and to the fact that involve geomorphologic parameters, without requiring tracers. Secondly but not the less important, because it is based on fundamental mechanisms that are widely accepted, and then they should not lead to results in conflict with experiments. For these reasons, and also because the study of water quality depends critically on the understanding of these processes, it is interesting to review this subject. It will be tried to show if it is used a longitudinal coefficient function of time it is possible to recover the applicability of equation. For this it is used an extended work of PhD thesis done by H.B. Fischer in the Mc Keck channel of Caltech on behavior of Elder's relationship.application/pdfspaUniversidad Nacional de Colombia Sede Medellínhttp://revistas.unal.edu.co/index.php/dyna/article/view/36987Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaDyna; Vol. 81, núm. 186 (2014); 19-27 DYNA; Vol. 81, núm. 186 (2014); 19-27 2346-2183 0012-7353Constain Aragon, Alfredo Jose (2014) Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows. Dyna; Vol. 81, núm. 186 (2014); 19-27 DYNA; Vol. 81, núm. 186 (2014); 19-27 2346-2183 0012-7353 .Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flowsArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTDispersionGaussian dynamicswater quality studiesORIGINAL36987-217009-1-PB.pdfapplication/pdf1253322https://repositorio.unal.edu.co/bitstream/unal/48906/1/36987-217009-1-PB.pdf3e2d76781482e8f1857ffa5f46f9b704MD5136987-156543-1-SP.docxapplication/vnd.openxmlformats-officedocument.wordprocessingml.document14291https://repositorio.unal.edu.co/bitstream/unal/48906/2/36987-156543-1-SP.docxdbadf3a61af12788cfa41d54c23028d9MD52THUMBNAIL36987-217009-1-PB.pdf.jpg36987-217009-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9383https://repositorio.unal.edu.co/bitstream/unal/48906/3/36987-217009-1-PB.pdf.jpgea62212b284bda4942416eaffd43a4fbMD53unal/48906oai:repositorio.unal.edu.co:unal/489062023-11-05 23:19:22.057Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
title Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
spellingShingle Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
Dispersion
Gaussian dynamics
water quality studies
title_short Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
title_full Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
title_fullStr Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
title_full_unstemmed Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
title_sort Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows
dc.creator.fl_str_mv Constain Aragon, Alfredo Jose
dc.contributor.author.spa.fl_str_mv Constain Aragon, Alfredo Jose
dc.subject.proposal.spa.fl_str_mv Dispersion
Gaussian dynamics
water quality studies
topic Dispersion
Gaussian dynamics
water quality studies
description One of first practical definitions for numerical solutions of classical model of Advection-Dispersion was the Elder's equation developed in 1959. This relationship based on the theoretical guidance proposed by G.I. Taylor for long, straight pipes, extent successfully the method for the case of ideal prismatic, wide channels in open flow. However, wishing to apply it to real cases with varied geometry the results were not satisfactory due to several reasons which will be examined in this article. This limiting situation for the equation is inconvenient for two reasons: First, whatsoever it is a very used equation due to its simplicity and to the fact that involve geomorphologic parameters, without requiring tracers. Secondly but not the less important, because it is based on fundamental mechanisms that are widely accepted, and then they should not lead to results in conflict with experiments. For these reasons, and also because the study of water quality depends critically on the understanding of these processes, it is interesting to review this subject. It will be tried to show if it is used a longitudinal coefficient function of time it is possible to recover the applicability of equation. For this it is used an extended work of PhD thesis done by H.B. Fischer in the Mc Keck channel of Caltech on behavior of Elder's relationship.
publishDate 2014
dc.date.issued.spa.fl_str_mv 2014-08-25
dc.date.accessioned.spa.fl_str_mv 2019-06-29T08:12:21Z
dc.date.available.spa.fl_str_mv 2019-06-29T08:12:21Z
dc.type.spa.fl_str_mv Artículo de revista
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_2df8fbb1
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/article
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.coar.spa.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.coarversion.spa.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.content.spa.fl_str_mv Text
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/ART
format http://purl.org/coar/resource_type/c_6501
status_str publishedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/48906
dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/42363/
url https://repositorio.unal.edu.co/handle/unal/48906
http://bdigital.unal.edu.co/42363/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/dyna/article/view/36987
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Dyna
Dyna
dc.relation.ispartofseries.none.fl_str_mv Dyna; Vol. 81, núm. 186 (2014); 19-27 DYNA; Vol. 81, núm. 186 (2014); 19-27 2346-2183 0012-7353
dc.relation.references.spa.fl_str_mv Constain Aragon, Alfredo Jose (2014) Revalidation of elder's equation for accurate measurements of dispersion coefficients in natural flows. Dyna; Vol. 81, núm. 186 (2014); 19-27 DYNA; Vol. 81, núm. 186 (2014); 19-27 2346-2183 0012-7353 .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia Sede Medellín
institution Universidad Nacional de Colombia
bitstream.url.fl_str_mv https://repositorio.unal.edu.co/bitstream/unal/48906/1/36987-217009-1-PB.pdf
https://repositorio.unal.edu.co/bitstream/unal/48906/2/36987-156543-1-SP.docx
https://repositorio.unal.edu.co/bitstream/unal/48906/3/36987-217009-1-PB.pdf.jpg
bitstream.checksum.fl_str_mv 3e2d76781482e8f1857ffa5f46f9b704
dbadf3a61af12788cfa41d54c23028d9
ea62212b284bda4942416eaffd43a4fb
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
MD5
repository.name.fl_str_mv Repositorio Institucional Universidad Nacional de Colombia
repository.mail.fl_str_mv repositorio_nal@unal.edu.co
_version_ 1814090164263190528