Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps

Autores
Romagnoli, Martín; García, Carlos M.; Lopardo, Raúl Antonio
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This note presents experimental results on an error analysis of acoustic Doppler velocimeter (ADV) turbulence measurements in free hydraulic jumps incorporating a recent ADV signal processing technique. The work aims to quantify the influence of each error source in acoustic Doppler measurements (i.e., presence of spikes, Doppler noise, and filtering effects due to the ADV sampling strategy) on variance and integral time scale computations as well as to define the corresponding confidence interval for each reported value. Experiments were conducted for an upstream Froude number of 3.0. The relative error contribution of each source to both raw longitudinal variance and raw longitudinal integral time scale decreases downstream. Inside the zone where aeration effects and high turbulence levels are relevant, Doppler noise constitutes the most important error source. Further downstream, where aeration effects and turbulence levels diminish, the error produced by the presence of spikes can be neglected, whereas the effects of both Doppler noise and ADVs’ sampling strategy are balanced. The relative confidence interval for corrected longitudinal variance ranges between 30 and 10%, whereas the relative uncertainty level for the corrected longitudinal integral time scale varies from 80 to 50%. The results of this study point out the requirement for an adequate signal postprocessing technique and uncertainty analysis of ADV turbulence measurements.
Fil: Romagnoli, Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Centro Internacional Franco Argentino de Ciencias de la Información y de Sistemas. Universidad Nacional de Rosario. Centro Internacional Franco Argentino de Ciencias de la Información y de Sistemas; Argentina
Fil: García, Carlos M.. Universidad Nacional de Córdoba; Argentina
Fil: Lopardo, Raúl Antonio. Ministerio del Interior, Obras Públicas y Vivienda. Secretaría de Obras Públicas. Subsecretaría de Recursos Hídricos. Instituto Nacional del Agua y del Ambiente (Ezeiza); Argentina
Materia
Turbulence measurements
Acoustic Doppler velocimeters
Hydraulic jump
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/269493
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/269493
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network_name_str CONICET Digital (CONICET)
spelling Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic JumpsRomagnoli, MartínGarcía, Carlos M.Lopardo, Raúl AntonioTurbulence measurementsAcoustic Doppler velocimetersHydraulic jumphttps://purl.org/becyt/ford/2.1https://purl.org/becyt/ford/2This note presents experimental results on an error analysis of acoustic Doppler velocimeter (ADV) turbulence measurements in free hydraulic jumps incorporating a recent ADV signal processing technique. The work aims to quantify the influence of each error source in acoustic Doppler measurements (i.e., presence of spikes, Doppler noise, and filtering effects due to the ADV sampling strategy) on variance and integral time scale computations as well as to define the corresponding confidence interval for each reported value. Experiments were conducted for an upstream Froude number of 3.0. The relative error contribution of each source to both raw longitudinal variance and raw longitudinal integral time scale decreases downstream. Inside the zone where aeration effects and high turbulence levels are relevant, Doppler noise constitutes the most important error source. Further downstream, where aeration effects and turbulence levels diminish, the error produced by the presence of spikes can be neglected, whereas the effects of both Doppler noise and ADVs’ sampling strategy are balanced. The relative confidence interval for corrected longitudinal variance ranges between 30 and 10%, whereas the relative uncertainty level for the corrected longitudinal integral time scale varies from 80 to 50%. The results of this study point out the requirement for an adequate signal postprocessing technique and uncertainty analysis of ADV turbulence measurements.Fil: Romagnoli, Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Centro Internacional Franco Argentino de Ciencias de la Información y de Sistemas. Universidad Nacional de Rosario. Centro Internacional Franco Argentino de Ciencias de la Información y de Sistemas; ArgentinaFil: García, Carlos M.. Universidad Nacional de Córdoba; ArgentinaFil: Lopardo, Raúl Antonio. Ministerio del Interior, Obras Públicas y Vivienda. Secretaría de Obras Públicas. Subsecretaría de Recursos Hídricos. Instituto Nacional del Agua y del Ambiente (Ezeiza); ArgentinaAmerican Society of Civil Engineers2012-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/269493Romagnoli, Martín; García, Carlos M.; Lopardo, Raúl Antonio; Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps; American Society of Civil Engineers; Journal of Hydraulic Engineering; 138; 4; 4-2012; 353-3570733-9429CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://ascelibrary.org/doi/10.1061/%28ASCE%29HY.1943-7900.0000507info:eu-repo/semantics/altIdentifier/doi/10.1061/(ASCE)HY.1943-7900.0000507info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:38:51Zoai:ri.conicet.gov.ar:11336/269493instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:38:52.145CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
title Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
spellingShingle Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
Romagnoli, Martín
Turbulence measurements
Acoustic Doppler velocimeters
Hydraulic jump
title_short Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
title_full Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
title_fullStr Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
title_full_unstemmed Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
title_sort Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps
dc.creator.none.fl_str_mv Romagnoli, Martín
García, Carlos M.
Lopardo, Raúl Antonio
author Romagnoli, Martín
author_facet Romagnoli, Martín
García, Carlos M.
Lopardo, Raúl Antonio
author_role author
author2 García, Carlos M.
Lopardo, Raúl Antonio
author2_role author
author
dc.subject.none.fl_str_mv Turbulence measurements
Acoustic Doppler velocimeters
Hydraulic jump
topic Turbulence measurements
Acoustic Doppler velocimeters
Hydraulic jump
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.1
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This note presents experimental results on an error analysis of acoustic Doppler velocimeter (ADV) turbulence measurements in free hydraulic jumps incorporating a recent ADV signal processing technique. The work aims to quantify the influence of each error source in acoustic Doppler measurements (i.e., presence of spikes, Doppler noise, and filtering effects due to the ADV sampling strategy) on variance and integral time scale computations as well as to define the corresponding confidence interval for each reported value. Experiments were conducted for an upstream Froude number of 3.0. The relative error contribution of each source to both raw longitudinal variance and raw longitudinal integral time scale decreases downstream. Inside the zone where aeration effects and high turbulence levels are relevant, Doppler noise constitutes the most important error source. Further downstream, where aeration effects and turbulence levels diminish, the error produced by the presence of spikes can be neglected, whereas the effects of both Doppler noise and ADVs’ sampling strategy are balanced. The relative confidence interval for corrected longitudinal variance ranges between 30 and 10%, whereas the relative uncertainty level for the corrected longitudinal integral time scale varies from 80 to 50%. The results of this study point out the requirement for an adequate signal postprocessing technique and uncertainty analysis of ADV turbulence measurements.
Fil: Romagnoli, Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Centro Internacional Franco Argentino de Ciencias de la Información y de Sistemas. Universidad Nacional de Rosario. Centro Internacional Franco Argentino de Ciencias de la Información y de Sistemas; Argentina
Fil: García, Carlos M.. Universidad Nacional de Córdoba; Argentina
Fil: Lopardo, Raúl Antonio. Ministerio del Interior, Obras Públicas y Vivienda. Secretaría de Obras Públicas. Subsecretaría de Recursos Hídricos. Instituto Nacional del Agua y del Ambiente (Ezeiza); Argentina
description This note presents experimental results on an error analysis of acoustic Doppler velocimeter (ADV) turbulence measurements in free hydraulic jumps incorporating a recent ADV signal processing technique. The work aims to quantify the influence of each error source in acoustic Doppler measurements (i.e., presence of spikes, Doppler noise, and filtering effects due to the ADV sampling strategy) on variance and integral time scale computations as well as to define the corresponding confidence interval for each reported value. Experiments were conducted for an upstream Froude number of 3.0. The relative error contribution of each source to both raw longitudinal variance and raw longitudinal integral time scale decreases downstream. Inside the zone where aeration effects and high turbulence levels are relevant, Doppler noise constitutes the most important error source. Further downstream, where aeration effects and turbulence levels diminish, the error produced by the presence of spikes can be neglected, whereas the effects of both Doppler noise and ADVs’ sampling strategy are balanced. The relative confidence interval for corrected longitudinal variance ranges between 30 and 10%, whereas the relative uncertainty level for the corrected longitudinal integral time scale varies from 80 to 50%. The results of this study point out the requirement for an adequate signal postprocessing technique and uncertainty analysis of ADV turbulence measurements.
publishDate 2012
dc.date.none.fl_str_mv 2012-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/269493
Romagnoli, Martín; García, Carlos M.; Lopardo, Raúl Antonio; Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps; American Society of Civil Engineers; Journal of Hydraulic Engineering; 138; 4; 4-2012; 353-357
0733-9429
CONICET Digital
CONICET
url http://hdl.handle.net/11336/269493
identifier_str_mv Romagnoli, Martín; García, Carlos M.; Lopardo, Raúl Antonio; Signal Postprocessing Technique and Uncertainty Analysis of ADV Turbulence Measurements on Free Hydraulic Jumps; American Society of Civil Engineers; Journal of Hydraulic Engineering; 138; 4; 4-2012; 353-357
0733-9429
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ascelibrary.org/doi/10.1061/%28ASCE%29HY.1943-7900.0000507
info:eu-repo/semantics/altIdentifier/doi/10.1061/(ASCE)HY.1943-7900.0000507
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society of Civil Engineers
publisher.none.fl_str_mv American Society of Civil Engineers
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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