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Assessment of passive drag in swimming by numerical simulation and analytical procedure

2018Journal article Restricted access
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dc.contributor.authorBarbosa, Tiago M.
dc.contributor.authorRamos, Rui J.
dc.contributor.authorSilva, A.J.
dc.contributor.authorMarinho, D.A.
dc.date.accessioned2017-12-15T10:28:54Z
dc.date.available2017-12-15T10:28:54Z
dc.date.issued2018
dc.description.abstractThe aim was to compare the passive drag-gliding underwater by a numerical simulation and an analytical procedure. An Olympic swimmer was scanned by computer tomography and modelled gliding at a 0.75-m depth in the streamlined position. Steady-state computer fluid dynamics (CFD) analyses were performed on Fluent. A set of analytical procedures was selected concurrently. Friction drag (Df), pressure drag (Dpr), total passive drag force (Df +pr) and drag coefficient (CD) were computed between 1.3 and 2.5 m · s−1 by both techniques. Df +pr ranged from 45.44 to 144.06 N with CFD, from 46.03 to 167.06 N with the analytical procedure (differences: from 1.28% to 13.77%). CD ranged between 0.698 and 0.622 by CFD, 0.657 and 0.644 by analytical procedures (differences: 0.40–6.30%). Linear regression models showed a very high association for Df +pr plotted in absolute values (R2 = 0.98) and after log–log transformation (R2 = 0.99). The CD also obtained a very high adjustment for both absolute (R2 = 0.97) and log–log plots (R2 = 0.97). The bias for the Df +pr was 8.37 N and 0.076 N after logarithmic transformation. Df represented between 15.97% and 18.82% of the Df +pr by the CFD, 14.66% and 16.21% by the analytical procedures. Therefore, despite the bias, analytical procedures offer a feasible way of gathering insight on one’s hydrodynamics characteristicpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBarbosa, Tiago M.; Ramos, Rui; Silva, A.J.; Marinho, D.A. (2018). Assessment of passive drag in swimming by numerical simulation and analytical procedure. Journal of Sports Sciences. ISSN 0264-0414. 36:5, p. 492-498pt_PT
dc.identifier.doi10.1080/02640414.2017.1321774pt_PT
dc.identifier.issn0264-0414
dc.identifier.urihttp://hdl.handle.net/10198/14735
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoutledgept_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDrag coefficientpt_PT
dc.subjectFriction dragpt_PT
dc.subjectGliding pressurept_PT
dc.subjectDrag swimmingpt_PT
dc.titleAssessment of passive drag in swimming by numerical simulation and analytical procedurept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FDTP%2F04045%2F2013/PT
oaire.citation.endPage498pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage492pt_PT
oaire.citation.titleJournal of Sports Sciencespt_PT
oaire.citation.volume36pt_PT
oaire.fundingStream5876
person.familyNameBarbosa
person.givenNameTiago M.
person.identifier.ciencia-id8B11-BDC4-F6FF
person.identifier.orcid0000-0001-7071-2116
person.identifier.scopus-author-id10044856400
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication941a6f14-cfba-458a-a2e3-0cbd1846cd42
relation.isAuthorOfPublication.latestForDiscovery941a6f14-cfba-458a-a2e3-0cbd1846cd42
relation.isProjectOfPublication9d8cbba0-b743-47a5-b5b2-2c62d6d8a9df
relation.isProjectOfPublication.latestForDiscovery9d8cbba0-b743-47a5-b5b2-2c62d6d8a9df

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