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: | https://doi.org/10.6063/motricidade.27479 |
Resumo: | 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 simulationsOriginal ArticleDrag 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 Sílabas Didáticas2023-03-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://doi.org/10.6063/motricidade.27479eng2182-29721646-107XForte, PedroMorais, Jorge E.Branquinho, LuísNeiva, Henrique PereiraMonteiro, António M.Barbosa, Tiago M.Silva, António J.Marinho, Daniel A.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-31T13:45:36Zoai:ojs.revistas.rcaap.pt:article/27479Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:49:58.389534Repositório 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 Original Article |
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 E. Branquinho, Luís Neiva, Henrique Pereira Monteiro, António M. Barbosa, Tiago M. Silva, António J. Marinho, Daniel A. |
author_role |
author |
author2 |
Morais, Jorge E. Branquinho, Luís Neiva, Henrique Pereira Monteiro, António M. Barbosa, Tiago M. Silva, António J. Marinho, Daniel A. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Forte, Pedro Morais, Jorge E. Branquinho, Luís Neiva, Henrique Pereira Monteiro, António M. Barbosa, Tiago M. Silva, António J. Marinho, Daniel A. |
dc.subject.por.fl_str_mv |
Original Article |
topic |
Original Article |
description |
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 |
2023-03-30 |
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 |
https://doi.org/10.6063/motricidade.27479 |
url |
https://doi.org/10.6063/motricidade.27479 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2182-2972 1646-107X |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Edições Sílabas Didáticas |
publisher.none.fl_str_mv |
Edições Sílabas Didáticas |
dc.source.none.fl_str_mv |
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 |
|
_version_ |
1799131580225028096 |