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

2017Journal article Open access
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dc.contributor.authorBarbosa, Tiago M.
dc.contributor.authorRamos, Rui
dc.contributor.authorSilva, António
dc.contributor.authorMarinho, Daniel
dc.date.accessioned2020-02-12T17:23:33Z
dc.date.available2020-02-12T17:23:33Z
dc.date.issued2017
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 characteristics.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1080/02640414.2017.1321774pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/9254
dc.language.isoengpt_PT
dc.subjectBiomechanical Phenomenapt_PT
dc.subjectData Interpretation Statisticalpt_PT
dc.subjectFrictionpt_PT
dc.subjectHumanspt_PT
dc.subjectMalept_PT
dc.subjectSwimmingpt_PT
dc.subjectComputer Simulationpt_PT
dc.subjectHydrodynamicspt_PT
dc.subjectLinear Modelspt_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.familyNameSilva
person.familyNameMarinho
person.givenNameTiago M.
person.givenNameAntónio
person.givenNameDaniel
person.identifier.ciencia-id8B11-BDC4-F6FF
person.identifier.ciencia-id8C15-83CB-5566
person.identifier.ciencia-id471B-F3CC-479A
person.identifier.orcid0000-0001-7071-2116
person.identifier.orcid0000-0001-5790-5116
person.identifier.orcid0000-0003-2351-3047
person.identifier.scopus-author-id10044856400
person.identifier.scopus-author-id13410238400
person.identifier.scopus-author-id15022568500
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationba742ddc-ae48-410f-b1d9-b69494c9eba5
relation.isAuthorOfPublicationf83dec25-3fd3-4490-843d-805a431ee258
relation.isAuthorOfPublication1b7a1cda-cf15-4686-bb08-1ac47b66b314
relation.isAuthorOfPublication.latestForDiscovery1b7a1cda-cf15-4686-bb08-1ac47b66b314
relation.isProjectOfPublication21605534-4b03-42b6-af81-98452bc66680
relation.isProjectOfPublication.latestForDiscovery21605534-4b03-42b6-af81-98452bc66680

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