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Comparison of various hemodynamic models for applications to CFD in stent arteries

hal.structure.identifierLaboratoire de Dynamique des Fluides [DynFluid]
dc.contributor.authorCHABI, Fatiha
hal.structure.identifierLaboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
dc.contributor.authorCHAMPMARTIN, Stéphane
hal.structure.identifierLaboratoire de Dynamique des Fluides [DynFluid]
dc.contributor.authorSARRAF, Christophe
hal.structure.identifierLaboratoire de Dynamique des Fluides [DynFluid]
dc.contributor.authorNOGUERA, Ricardo
hal.structure.identifierChirurgie vasculaire
dc.contributor.authorMAUREL, Blandine
dc.date.accessioned2021-05-14T09:55:26Z
dc.date.available2021-05-14T09:55:26Z
dc.date.issued2014-09
dc.date.conference2014-09
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77692
dc.descriptionThis work assesses three hemodynamic models for the numerical modeling of intra-stent flows. These are the classical Poiseuille model (PM), the simplified pulsatile model (SPM) and the complete pulsatile model (CPM) based on the analysis of Womersley. They are applied to the physiological flow rate of a stented left coronary artery. The CFD package "Ansys Fluent 14.5" is used to compute the main features of the flows. The results show large differences between the steady and unsteady models notably for the wall shear stress and the re-circulation lengths, which are known to promote intra-stent restenosis. The PM is obviously not pertinent to calculate the flows involved in intra-stent restenosis. The CPM and SPM give close results but the latter model is by far less time-demanding and should be preferred.
dc.description.abstractEnThis work assesses three hemodynamic models for the numerical modeling of intra-stent flows. These are the classical Poiseuille model (PM), the simplified pulsatile model (SPM) and the complete pulsatile model (CPM) based on the analysis of Womersley. They are applied to the physiological flow rate of a stented left coronary artery. The CFD package "Ansys Fluent 14.5" is used to compute the main features of the flows. The results show large differences between the steady and unsteady models notably for the wall shear stress and the re-circulation lengths, which are known to promote intra-stent restenosis. The PM is obviously not pertinent to calculate the flows involved in intra-stent restenosis. The CPM and SPM give close results but the latter model is by far less time-demanding and should be preferred.
dc.language.isoen
dc.source.titleConference on Mechanics in Medicine and Biology
dc.subject.enpulsatile physiologic flow
dc.subject.enintra-stent flow
dc.subject.enrestenosis
dc.title.enComparison of various hemodynamic models for applications to CFD in stent arteries
dc.typeCommunication dans un congrès avec actes
dc.subject.halSciences du Vivant [q-bio]/Bio-Informatique, Biologie Systémique [q-bio.QM]
dc.subject.halSciences du Vivant [q-bio]/Ingénierie biomédicale
bordeaux.page1-4
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.countryIT
bordeaux.title.proceedingXIX International Conference on Mechanics in Medicine and Biology
bordeaux.conference.cityBologne
bordeaux.peerReviewedoui
hal.identifierhal-01206926
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01206926v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Conference%20on%20Mechanics%20in%20Medicine%20and%20Biology&rft.date=2014-09&rft.spage=1-4&rft.epage=1-4&rft.au=CHABI,%20Fatiha&CHAMPMARTIN,%20St%C3%A9phane&SARRAF,%20Christophe&NOGUERA,%20Ricardo&MAUREL,%20Blandine&rft.genre=proceeding


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