The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-107X2023000100078 |
Resumo: | Abstract Drag crisis has been described as a drop in the drag coefficient (Cd). This procedure was lately assessed in able-bodied cyclists in time trial position by computational fluid dynamics (CFD). Therefore, the aim of this study was to assess the phenomenon of the drag crisis by computer fluid dynamics in transradial and transtibial amputee cyclists in the upright position. A male elite-level cyclist was recruited for this research. The subject was scanned (3D geometry with a 3D Scan) with his competition bicycle, helmet, suit, and shoes. Consequently, transradial and transtibial 3D models were created editing the able-bodied 3D model. To perform the CFD analyses, a domain measuring 7 x 2.5 x 2.5 m (length, width and height, respectively) was created around each bicycle-cyclist model. The domains were meshed with more than 42 million elements. Numerical simulations by CFD were performed in fluent numerical for speeds between 1 m/s and 13 m/s, with increments of 1 m/s. The total Cd decreased with speed. It ranged from 0.84 to 0.55 in the able-bodied, 0.86 to 0.64 in the transradial and 0.90 to 0.61 in the transtibial. The drag crisis phenomenon was observed between 1m/s and 4m/s in all models. |
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The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulationscyclingdragcoefficientscrisisable-bodiedamputeeAbstract Drag crisis has been described as a drop in the drag coefficient (Cd). This procedure was lately assessed in able-bodied cyclists in time trial position by computational fluid dynamics (CFD). Therefore, the aim of this study was to assess the phenomenon of the drag crisis by computer fluid dynamics in transradial and transtibial amputee cyclists in the upright position. A male elite-level cyclist was recruited for this research. The subject was scanned (3D geometry with a 3D Scan) with his competition bicycle, helmet, suit, and shoes. Consequently, transradial and transtibial 3D models were created editing the able-bodied 3D model. To perform the CFD analyses, a domain measuring 7 x 2.5 x 2.5 m (length, width and height, respectively) was created around each bicycle-cyclist model. The domains were meshed with more than 42 million elements. Numerical simulations by CFD were performed in fluent numerical for speeds between 1 m/s and 13 m/s, with increments of 1 m/s. The total Cd decreased with speed. It ranged from 0.84 to 0.55 in the able-bodied, 0.86 to 0.64 in the transradial and 0.90 to 0.61 in the transtibial. The drag crisis phenomenon was observed between 1m/s and 4m/s in all models.Edições Desafio Singular2023-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-107X2023000100078Motricidade v.19 n.1 2023reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-107X2023000100078Forte,PedroMorais,Jorge EstrelaBranquinho,LuísNeiva,Henrique PereiraMonteiro,António MiguelBarbosa,Tiago ManuelSilva,António JoséMarinho,Daniel Almeidainfo:eu-repo/semantics/openAccess2024-02-06T17:20:38Zoai:scielo:S1646-107X2023000100078Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:27:56.750895Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations |
title |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations |
spellingShingle |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations Forte,Pedro cycling drag coefficients crisis able-bodied amputee |
title_short |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations |
title_full |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations |
title_fullStr |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations |
title_full_unstemmed |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations |
title_sort |
The drag coefficient variations across different speeds in able-bodied, transradial and transtibial amputee cyclists by numerical simulations |
author |
Forte,Pedro |
author_facet |
Forte,Pedro Morais,Jorge Estrela Branquinho,Luís Neiva,Henrique Pereira Monteiro,António Miguel Barbosa,Tiago Manuel Silva,António José Marinho,Daniel Almeida |
author_role |
author |
author2 |
Morais,Jorge Estrela Branquinho,Luís Neiva,Henrique Pereira Monteiro,António Miguel Barbosa,Tiago Manuel Silva,António José Marinho,Daniel Almeida |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Forte,Pedro Morais,Jorge Estrela Branquinho,Luís Neiva,Henrique Pereira Monteiro,António Miguel Barbosa,Tiago Manuel Silva,António José Marinho,Daniel Almeida |
dc.subject.por.fl_str_mv |
cycling drag coefficients crisis able-bodied amputee |
topic |
cycling drag coefficients crisis able-bodied amputee |
description |
Abstract Drag crisis has been described as a drop in the drag coefficient (Cd). This procedure was lately assessed in able-bodied cyclists in time trial position by computational fluid dynamics (CFD). Therefore, the aim of this study was to assess the phenomenon of the drag crisis by computer fluid dynamics in transradial and transtibial amputee cyclists in the upright position. A male elite-level cyclist was recruited for this research. The subject was scanned (3D geometry with a 3D Scan) with his competition bicycle, helmet, suit, and shoes. Consequently, transradial and transtibial 3D models were created editing the able-bodied 3D model. To perform the CFD analyses, a domain measuring 7 x 2.5 x 2.5 m (length, width and height, respectively) was created around each bicycle-cyclist model. The domains were meshed with more than 42 million elements. Numerical simulations by CFD were performed in fluent numerical for speeds between 1 m/s and 13 m/s, with increments of 1 m/s. The total Cd decreased with speed. It ranged from 0.84 to 0.55 in the able-bodied, 0.86 to 0.64 in the transradial and 0.90 to 0.61 in the transtibial. The drag crisis phenomenon was observed between 1m/s and 4m/s in all models. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-03-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-107X2023000100078 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-107X2023000100078 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-107X2023000100078 |
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 |
Edições Desafio Singular |
publisher.none.fl_str_mv |
Edições Desafio Singular |
dc.source.none.fl_str_mv |
Motricidade v.19 n.1 2023 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137350605864960 |