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Fluid flow and structural numerical analysis of a cerebral aneurysm model

2022Journal article Open access
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dc.contributor.authorSouza, Maria Sabrina
dc.contributor.authorSouza, Andrews Victor Almeida
dc.contributor.authorCarvalho, Violeta Meneses
dc.contributor.authorTeixeira, Senhorinha F.C.F.
dc.contributor.authorFernandes, Carla S.
dc.contributor.authorLima, Rui A.
dc.contributor.authorRibeiro, J.E.
dc.date.accessioned2022-05-09T13:57:08Z
dc.date.available2022-05-09T13:57:08Z
dc.date.issued2022
dc.description.abstractIntracranial aneurysms (IA) are dilations of the cerebral arteries and, in most cases, have no symptoms. However, it is a very serious pathology, with a high mortality rate after rupture. Several studies have been focused only on the hemodynamics of the flow within the IA. However, besides the effect of the flow, the development and rupture of the IA are also associated with a combination of other factors such as the wall mechanical behavior. Thus, the objective of this work was to analyze, in addition to the flow behavior, the biomechanical behavior of the aneurysm wall. For this, CFD simulations were performed for different Reynolds numbers (1, 100, 500 and 1000) and for two different rheological models (Newtonian and Carreau). Subsequently, the pressure values of the fluid simulations were exported to the structural simulations in order to qualitatively observe the deformations, strains, normal stresses and shear stress generated in the channel wall. For the structural simulations, a hyperelastic constitutive model (5-parameter Mooney–Rivlin) was used. The results show that with the increase in the Reynolds number (Re), the recirculation phenomenon is more pronounced, which is not seen for Re = 1. The higher the Re, the higher the strain, displacement, normal and shear stresses values.pt_PT
dc.description.sponsorshipThe authors acknowledge the financial support from the project EXPL/EME-EME/0732/2021, funded by the NORTE 2020 Portugal Regional Operational Programme, under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund (FEDER) and by Fundação para a Ciência e Tecnologia (FCT). This work was also supported by Fundação para a Ciência e a Tecnologia (FCT) under the strategic grants UIDB/04077/2020, UIDB/04436/2020, UIDB/00319/2020 and UIDB/00532/2020. Andrews Souza and Violeta Carvalho also acknowledge the financial support by FCT through the individual research grants 2021.07961.BD and UI/BD/151028/2021, respectively.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSouza, Maria Sabrina; Souza, Andrews; Carvalho, Violeta; Teixeira, Senhorinha; Fernandes, Carla S.; Lima, Rui; Ribeiro, J.E. (2022). Fluid flow and structural numerical analysis of a cerebral aneurysm model. Fluids. ISSN 2311-5521. 7:3, p. 1-16pt_PT
dc.identifier.doi10.3390/fluids7030100pt_PT
dc.identifier.issn2311-5521
dc.identifier.urihttp://hdl.handle.net/10198/25426
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relationMicroelectromechanical Systems Research Unit
dc.relationALGORITMI Research Center
dc.relationTransport Phenomena Research Center
dc.relationDevelopment and optimization of innovative nanoparticles and a preclinical organ-on-a-chip platform for nanomedicine
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCFDpt_PT
dc.subjectStructural simulationpt_PT
dc.subjectIntracranial aneurysmpt_PT
dc.subjectCerebral aneurysmpt_PT
dc.subjectHemodynamicspt_PT
dc.titleFluid flow and structural numerical analysis of a cerebral aneurysm modelpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMechanical Engineering and Resource Sustainability Center
oaire.awardTitleMicroelectromechanical Systems Research Unit
oaire.awardTitleALGORITMI Research Center
oaire.awardTitleTransport Phenomena Research Center
oaire.awardTitleDevelopment and optimization of innovative nanoparticles and a preclinical organ-on-a-chip platform for nanomedicine
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/EXPL%2FEME-EME%2F0732%2F2021/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT//UI%2FBD%2F151028%2F2021/PT
oaire.citation.issue3pt_PT
oaire.citation.startPage100pt_PT
oaire.citation.titleFluidspt_PT
oaire.citation.volume7pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
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person.familyNameFernandes
person.familyNameRibeiro
person.givenNameCarla S.
person.givenNameJ.E.
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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