The 3D CFD study of gliding swimmer on passive hydrodynamics drag
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Archives of Biology and Technology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200020 |
Resumo: | The aim of this study was to analyze the effect of depth on the hydrodynamic drag coefficient during the passive underwater gliding after the starts and turns. The swimmer hydrodynamics performance was studied by the application of computational fluid dynamics (CFD) method. The steady-state CFD simulations were performed by the application of k - omega turbulent model and volume of fluid method to obtain two-phase flow around a three-dimensional swimmer model when gliding near water surface and at different depths from the water surface. The simulations were conducted for four different swimming pool size, each with different depth, i.e., 1.0, 1.5, 2.0 and 3.0 m for three different velocities, i.e., 1.5, 2.0 and 2.5 m/s, with swimmer gliding at different depths with intervals of 0.25 m, each starting from the water surface, respectively. The numerical results of pressure drag and total coefficients at individual average race velocities were obtained. The results showed that the drag coefficient decreased as depth increased, with a trend toward reduced fluctuation after 0.5m depth from the water surface. The selection of the appropriate depth during the gliding phase should be a main concern of swimmers and coaches. |
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Brazilian Archives of Biology and Technology |
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The 3D CFD study of gliding swimmer on passive hydrodynamics dragComputational Fluid Dynamics (CFD)Passive DragStartsTurnsStreamline Gliding PositionGlide depthThe aim of this study was to analyze the effect of depth on the hydrodynamic drag coefficient during the passive underwater gliding after the starts and turns. The swimmer hydrodynamics performance was studied by the application of computational fluid dynamics (CFD) method. The steady-state CFD simulations were performed by the application of k - omega turbulent model and volume of fluid method to obtain two-phase flow around a three-dimensional swimmer model when gliding near water surface and at different depths from the water surface. The simulations were conducted for four different swimming pool size, each with different depth, i.e., 1.0, 1.5, 2.0 and 3.0 m for three different velocities, i.e., 1.5, 2.0 and 2.5 m/s, with swimmer gliding at different depths with intervals of 0.25 m, each starting from the water surface, respectively. The numerical results of pressure drag and total coefficients at individual average race velocities were obtained. The results showed that the drag coefficient decreased as depth increased, with a trend toward reduced fluctuation after 0.5m depth from the water surface. The selection of the appropriate depth during the gliding phase should be a main concern of swimmers and coaches.Instituto de Tecnologia do Paraná - Tecpar2014-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200020Brazilian Archives of Biology and Technology v.57 n.2 2014reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89132014000200020info:eu-repo/semantics/openAccessMantha,Vishveshwar RajendraMarinho,Daniel AlmeidaSilva,Antonio JoseRouboa,Abel Ilaheng2014-04-04T00:00:00Zoai:scielo:S1516-89132014000200020Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2014-04-04T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false |
dc.title.none.fl_str_mv |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag |
title |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag |
spellingShingle |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag Mantha,Vishveshwar Rajendra Computational Fluid Dynamics (CFD) Passive Drag Starts Turns Streamline Gliding Position Glide depth |
title_short |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag |
title_full |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag |
title_fullStr |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag |
title_full_unstemmed |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag |
title_sort |
The 3D CFD study of gliding swimmer on passive hydrodynamics drag |
author |
Mantha,Vishveshwar Rajendra |
author_facet |
Mantha,Vishveshwar Rajendra Marinho,Daniel Almeida Silva,Antonio Jose Rouboa,Abel Ilah |
author_role |
author |
author2 |
Marinho,Daniel Almeida Silva,Antonio Jose Rouboa,Abel Ilah |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Mantha,Vishveshwar Rajendra Marinho,Daniel Almeida Silva,Antonio Jose Rouboa,Abel Ilah |
dc.subject.por.fl_str_mv |
Computational Fluid Dynamics (CFD) Passive Drag Starts Turns Streamline Gliding Position Glide depth |
topic |
Computational Fluid Dynamics (CFD) Passive Drag Starts Turns Streamline Gliding Position Glide depth |
description |
The aim of this study was to analyze the effect of depth on the hydrodynamic drag coefficient during the passive underwater gliding after the starts and turns. The swimmer hydrodynamics performance was studied by the application of computational fluid dynamics (CFD) method. The steady-state CFD simulations were performed by the application of k - omega turbulent model and volume of fluid method to obtain two-phase flow around a three-dimensional swimmer model when gliding near water surface and at different depths from the water surface. The simulations were conducted for four different swimming pool size, each with different depth, i.e., 1.0, 1.5, 2.0 and 3.0 m for three different velocities, i.e., 1.5, 2.0 and 2.5 m/s, with swimmer gliding at different depths with intervals of 0.25 m, each starting from the water surface, respectively. The numerical results of pressure drag and total coefficients at individual average race velocities were obtained. The results showed that the drag coefficient decreased as depth increased, with a trend toward reduced fluctuation after 0.5m depth from the water surface. The selection of the appropriate depth during the gliding phase should be a main concern of swimmers and coaches. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200020 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200020 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-89132014000200020 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná - Tecpar |
publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná - Tecpar |
dc.source.none.fl_str_mv |
Brazilian Archives of Biology and Technology v.57 n.2 2014 reponame:Brazilian Archives of Biology and Technology instname:Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR |
instname_str |
Instituto de Tecnologia do Paraná (Tecpar) |
instacron_str |
TECPAR |
institution |
TECPAR |
reponame_str |
Brazilian Archives of Biology and Technology |
collection |
Brazilian Archives of Biology and Technology |
repository.name.fl_str_mv |
Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar) |
repository.mail.fl_str_mv |
babt@tecpar.br||babt@tecpar.br |
_version_ |
1750318276108353536 |