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Computational fluid dynamics vs. inverse dynamics methods to determine passive drag in two breaststroke glide positions

2015-07-16Journal article Open access
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dc.contributor.authorCosta, L.
dc.contributor.authorMantha, V R
dc.contributor.authorSilva, António
dc.contributor.authorFernandes, Ricardo J.
dc.contributor.authorMarinho, Daniel
dc.contributor.authorVilas Boas, J. Paulo
dc.contributor.authorMachado, Leandro
dc.contributor.authorRouboa, A
dc.date.accessioned2020-02-14T16:46:20Z
dc.date.available2020-02-14T16:46:20Z
dc.date.issued2015-07-16
dc.description.abstractComputational fluid dynamics (CFD) plays an important role to quantify, understand and "observe" the water movements around the human body and its effects on drag (D). We aimed to investigate the flow effects around the swimmer and to compare the drag and drag coefficient (CD) values obtained from experiments (using cable velocimetry in a swimming pool) with those of CFD simulations for the two ventral gliding positions assumed during the breaststroke underwater cycle (with shoulders flexed and upper limbs extended above the head-GP1; with shoulders in neutral position and upper limbs extended along the trunk-GP2). Six well-trained breaststroke male swimmers (with reasonable homogeneity of body characteristics) participated in the experimental tests; afterwards a 3D swimmer model was created to fit within the limits of the sample body size profile. The standard k-ε turbulent model was used to simulate the fluid flow around the swimmer model. Velocity ranged from 1.30 to 1.70 m/s for GP1 and 1.10 to 1.50 m/s for GP2. Values found for GP1 and GP2 were lower for CFD than experimental ones. Nevertheless, both CFD and experimental drag/drag coefficient values displayed a tendency to jointly increase/decrease with velocity, except for GP2 CD where CFD and experimental values display opposite tendencies. Results suggest that CFD values obtained by single model approaches should be considered with caution due to small body shape and dimension differences to real swimmers. For better accuracy of CFD studies, realistic individual 3D models of swimmers are required, and specific kinematics respected.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.jbiomech.2015.03.005pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/9274
dc.language.isoengpt_PT
dc.subjectAdolescentpt_PT
dc.subjectBiomechanical Phenomenapt_PT
dc.subjectChildpt_PT
dc.subjectHumanspt_PT
dc.subjectHydrodynamicspt_PT
dc.subjectImaging Three-Dimensionalpt_PT
dc.subjectMalept_PT
dc.subjectPosturept_PT
dc.subjectRheologypt_PT
dc.subjectYoung Adultpt_PT
dc.subjectSwimmingpt_PT
dc.titleComputational fluid dynamics vs. inverse dynamics methods to determine passive drag in two breaststroke glide positionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue10pt_PT
oaire.citation.startPage2221-6pt_PT
oaire.citation.titleJournal of biomechanicspt_PT
oaire.citation.volume48pt_PT
person.familyNameSilva
person.familyNameFernandes
person.familyNameMarinho
person.familyNameVilas-Boas
person.familyNameMachado
person.givenNameAntónio
person.givenNameRicardo J.
person.givenNameDaniel
person.givenNameJ. Paulo
person.givenNameLeandro
person.identifier497179
person.identifierR-000-92N
person.identifier.ciencia-id8C15-83CB-5566
person.identifier.ciencia-id471B-F3CC-479A
person.identifier.ciencia-id0D18-D46F-09A1
person.identifier.ciencia-id7E17-6B94-5441
person.identifier.orcid0000-0001-5790-5116
person.identifier.orcid0000-0002-5811-0443
person.identifier.orcid0000-0003-2351-3047
person.identifier.orcid0000-0002-4109-2939
person.identifier.orcid0000-0001-5332-5974
person.identifier.scopus-author-id13410238400
person.identifier.scopus-author-id15022568500
person.identifier.scopus-author-id26424846800
person.identifier.scopus-author-id7102866127
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf83dec25-3fd3-4490-843d-805a431ee258
relation.isAuthorOfPublicatione2a64a7b-a6b0-434a-b3d7-72f41b9f3866
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relation.isAuthorOfPublication.latestForDiscovery66d9e3f3-ab73-45ef-b401-571284df3553

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