Wave reflection from submerged rectangular obstacles: experiments and predictive formula

Detalhes bibliográficos
Autor(a) principal: Lima Neto, Iran
Data de Publicação: 2018
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/37520
Resumo: This paper presents an experimental study on wave reflection from submerged rectangular objects (shelves) in a 2-D laboratory flume. Preliminary tests using resistive wire probes and an acoustic Doppler anemometer were first conducted to confirm that a piston-type wavemaker was able to produce sinusoidal waves in the channel, without significant reflection from the boundaries. Then, measurements of water surface displacements using the two-fixed probe method and considering the presence of submerged rectangular obstacles provided reflection coefficients for different wave parameters and submergence conditions. Dimensional analysis was conducted and a dimensionless relationship was obtained to describe the reflection coefficient as a function of the wave slope and the water-to-shelf depth ratio. This relationship can be potentially used to predict ocean wave reflection from submerged obstacles for similar conditions as those evaluated in the present study. 
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spelling Wave reflection from submerged rectangular obstacles: experiments and predictive formuladimensional analysislaboratory flumesubmerged obstacleswave reflection.mecânica de ondasThis paper presents an experimental study on wave reflection from submerged rectangular objects (shelves) in a 2-D laboratory flume. Preliminary tests using resistive wire probes and an acoustic Doppler anemometer were first conducted to confirm that a piston-type wavemaker was able to produce sinusoidal waves in the channel, without significant reflection from the boundaries. Then, measurements of water surface displacements using the two-fixed probe method and considering the presence of submerged rectangular obstacles provided reflection coefficients for different wave parameters and submergence conditions. Dimensional analysis was conducted and a dimensionless relationship was obtained to describe the reflection coefficient as a function of the wave slope and the water-to-shelf depth ratio. This relationship can be potentially used to predict ocean wave reflection from submerged obstacles for similar conditions as those evaluated in the present study. Universidade Estadual De Maringá2018-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionexperimentação; análise dimensional; regressãoapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3752010.4025/actascitechnol.v40i1.37520Acta Scientiarum. Technology; Vol 40 (2018): Publicação Contínua; e37520Acta Scientiarum. Technology; v. 40 (2018): Publicação Contínua; e375201806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/37520/pdfCopyright (c) 2018 Acta Scientiarum. Technologyhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessLima Neto, Iran2019-07-17T11:53:49Zoai:periodicos.uem.br/ojs:article/37520Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2019-07-17T11:53:49Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Wave reflection from submerged rectangular obstacles: experiments and predictive formula
title Wave reflection from submerged rectangular obstacles: experiments and predictive formula
spellingShingle Wave reflection from submerged rectangular obstacles: experiments and predictive formula
Lima Neto, Iran
dimensional analysis
laboratory flume
submerged obstacles
wave reflection.
mecânica de ondas
title_short Wave reflection from submerged rectangular obstacles: experiments and predictive formula
title_full Wave reflection from submerged rectangular obstacles: experiments and predictive formula
title_fullStr Wave reflection from submerged rectangular obstacles: experiments and predictive formula
title_full_unstemmed Wave reflection from submerged rectangular obstacles: experiments and predictive formula
title_sort Wave reflection from submerged rectangular obstacles: experiments and predictive formula
author Lima Neto, Iran
author_facet Lima Neto, Iran
author_role author
dc.contributor.author.fl_str_mv Lima Neto, Iran
dc.subject.por.fl_str_mv dimensional analysis
laboratory flume
submerged obstacles
wave reflection.
mecânica de ondas
topic dimensional analysis
laboratory flume
submerged obstacles
wave reflection.
mecânica de ondas
description This paper presents an experimental study on wave reflection from submerged rectangular objects (shelves) in a 2-D laboratory flume. Preliminary tests using resistive wire probes and an acoustic Doppler anemometer were first conducted to confirm that a piston-type wavemaker was able to produce sinusoidal waves in the channel, without significant reflection from the boundaries. Then, measurements of water surface displacements using the two-fixed probe method and considering the presence of submerged rectangular obstacles provided reflection coefficients for different wave parameters and submergence conditions. Dimensional analysis was conducted and a dimensionless relationship was obtained to describe the reflection coefficient as a function of the wave slope and the water-to-shelf depth ratio. This relationship can be potentially used to predict ocean wave reflection from submerged obstacles for similar conditions as those evaluated in the present study. 
publishDate 2018
dc.date.none.fl_str_mv 2018-07-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
experimentação; análise dimensional; regressão
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/37520
10.4025/actascitechnol.v40i1.37520
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/37520
identifier_str_mv 10.4025/actascitechnol.v40i1.37520
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/37520/pdf
dc.rights.driver.fl_str_mv Copyright (c) 2018 Acta Scientiarum. Technology
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2018 Acta Scientiarum. Technology
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 40 (2018): Publicação Contínua; e37520
Acta Scientiarum. Technology; v. 40 (2018): Publicação Contínua; e37520
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
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