HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Interdisciplinar de Pesquisa em Engenharia |
Texto Completo: | https://periodicos.unb.br/index.php/ripe/article/view/20770 |
Resumo: | High amplitude wave wake due to water flow on a school boat hull can prejudice directly residents of riverside communities by inducing erosions, damage to fixed or floating structures and also, damage to smaller boats, fishermen and swimmers. Therefore, designers introduced wave deflector surfaces in a new fleet of school boats to reduce the amplitude of the boat wave wake. In this study, the applicability of these surfaces were evaluated using computational tools. Initially, a multiphasic computational model of a Wigley hull was created in order to validate the numerical model. The validation model had good accordance compared to experimental results, with errors below 7% for resistance coefficient. Later, the school boat model was compared with images from the real operating school boat, where similarities between the two were observed. Models with different operation points were created. Finally, the comparison with, and without the wave deflector surfaces made it possible to notice the wave amplitude reduction. The wave deflector showed a efficiency improvement for velocities from 17.5 up to 20 km/h, above the usual operation speed of 15 km/h, which makes your use unfavorable. The methodology adopted was consistent and it can be used for a large range of investigations of this type. |
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HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFDSchool boat. Wigley hull. CFD. Free surface. VOF method.High amplitude wave wake due to water flow on a school boat hull can prejudice directly residents of riverside communities by inducing erosions, damage to fixed or floating structures and also, damage to smaller boats, fishermen and swimmers. Therefore, designers introduced wave deflector surfaces in a new fleet of school boats to reduce the amplitude of the boat wave wake. In this study, the applicability of these surfaces were evaluated using computational tools. Initially, a multiphasic computational model of a Wigley hull was created in order to validate the numerical model. The validation model had good accordance compared to experimental results, with errors below 7% for resistance coefficient. Later, the school boat model was compared with images from the real operating school boat, where similarities between the two were observed. Models with different operation points were created. Finally, the comparison with, and without the wave deflector surfaces made it possible to notice the wave amplitude reduction. The wave deflector showed a efficiency improvement for velocities from 17.5 up to 20 km/h, above the usual operation speed of 15 km/h, which makes your use unfavorable. The methodology adopted was consistent and it can be used for a large range of investigations of this type.Programa de Pós-Graduação em Integridade de Materiais da Engenharia2017-02-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.unb.br/index.php/ripe/article/view/2077010.26512/ripe.v2i26.20770Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 26 (2016): UNDERGRADUATE POSTER SESSION (II); 13-22Revista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 26 (2016): UNDERGRADUATE POSTER SESSION (II); 13-222447-6102reponame:Revista Interdisciplinar de Pesquisa em Engenhariainstname:Universidade de Brasília (UnB)instacron:UNBenghttps://periodicos.unb.br/index.php/ripe/article/view/20770/19140Copyright (c) 2018 Revista Interdisciplinar de Pesquisa em Engenharia - RIPEinfo:eu-repo/semantics/openAccessCoelho, Daniel FreitasMesquita, André Luiz Amarante2019-06-18T14:20:00Zoai:ojs.pkp.sfu.ca:article/20770Revistahttps://periodicos.unb.br/index.php/ripePUBhttps://periodicos.unb.br/index.php/ripe/oaianflor@unb.br2447-61022447-6102opendoar:2019-06-18T14:20Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB)false |
dc.title.none.fl_str_mv |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD |
title |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD |
spellingShingle |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD Coelho, Daniel Freitas School boat. Wigley hull. CFD. Free surface. VOF method. |
title_short |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD |
title_full |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD |
title_fullStr |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD |
title_full_unstemmed |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD |
title_sort |
HYDRODYNAMIC BEHAVIOR ANALYSIS OF A SCHOOL BOAT USING CFD |
author |
Coelho, Daniel Freitas |
author_facet |
Coelho, Daniel Freitas Mesquita, André Luiz Amarante |
author_role |
author |
author2 |
Mesquita, André Luiz Amarante |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Coelho, Daniel Freitas Mesquita, André Luiz Amarante |
dc.subject.por.fl_str_mv |
School boat. Wigley hull. CFD. Free surface. VOF method. |
topic |
School boat. Wigley hull. CFD. Free surface. VOF method. |
description |
High amplitude wave wake due to water flow on a school boat hull can prejudice directly residents of riverside communities by inducing erosions, damage to fixed or floating structures and also, damage to smaller boats, fishermen and swimmers. Therefore, designers introduced wave deflector surfaces in a new fleet of school boats to reduce the amplitude of the boat wave wake. In this study, the applicability of these surfaces were evaluated using computational tools. Initially, a multiphasic computational model of a Wigley hull was created in order to validate the numerical model. The validation model had good accordance compared to experimental results, with errors below 7% for resistance coefficient. Later, the school boat model was compared with images from the real operating school boat, where similarities between the two were observed. Models with different operation points were created. Finally, the comparison with, and without the wave deflector surfaces made it possible to notice the wave amplitude reduction. The wave deflector showed a efficiency improvement for velocities from 17.5 up to 20 km/h, above the usual operation speed of 15 km/h, which makes your use unfavorable. The methodology adopted was consistent and it can be used for a large range of investigations of this type. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-02-10 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/20770 10.26512/ripe.v2i26.20770 |
url |
https://periodicos.unb.br/index.php/ripe/article/view/20770 |
identifier_str_mv |
10.26512/ripe.v2i26.20770 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/20770/19140 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Revista Interdisciplinar de Pesquisa em Engenharia - RIPE info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Revista Interdisciplinar de Pesquisa em Engenharia - RIPE |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
dc.source.none.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 26 (2016): UNDERGRADUATE POSTER SESSION (II); 13-22 Revista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 26 (2016): UNDERGRADUATE POSTER SESSION (II); 13-22 2447-6102 reponame:Revista Interdisciplinar de Pesquisa em Engenharia instname:Universidade de Brasília (UnB) instacron:UNB |
instname_str |
Universidade de Brasília (UnB) |
instacron_str |
UNB |
institution |
UNB |
reponame_str |
Revista Interdisciplinar de Pesquisa em Engenharia |
collection |
Revista Interdisciplinar de Pesquisa em Engenharia |
repository.name.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB) |
repository.mail.fl_str_mv |
anflor@unb.br |
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1798315225256034304 |