A numerical model of pulsatile blood flow in compliant arteries of a truncated vascular system

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dc.authoridKahveci, Kamil/0000-0003-2492-8690
dc.authorwosidKahveci, Kamil/A-2954-2016
dc.contributor.authorKahveci, Kamil
dc.contributor.authorBecker, Bryan R.
dc.date.accessioned2024-06-12T10:54:53Z
dc.date.available2024-06-12T10:54:53Z
dc.date.issued2015
dc.departmentTrakya Üniversitesien_US
dc.description.abstractUThree dimensional blood flow in compliant, tapering vessels of a truncated vascular system model containing two levels of bifurcation was investigated numerically using a commercially available finite element analysis and simulation software. Although the branching pattern and the geometry of the human vascular system are complex, they can be specified for Small arteries using Murray's hypothesis that the structure of the vascular system obeys the principle of minimum work. Accordingly, in the current vascular system model, the parent/daughter diameter ratios and the angles of bifurcation were specified according to Murray's law. Another geometrical parameter, the ratio of blood vessel length to diameter, was determined according to data found in the literature. The vascular system model also includes a 5 mm thick layer of tissue surrounding the vessels. This tissue layer helps to resist artery deformation during the cardiac cycle. Experimentally measured time dependent blood velocity data, available in the literature, were used as the inlet boundary condition to represent the cardiac cycle. An outflow boundary model, consisting of an elastic tube followed by a contraction tube, was used at the four outlets to represent both the compliance and the pressure drop of the small arteries, arterioles, and capillaries that would follow the truncated vascular system. The results show that, at each bifurcation, the blood flow velocity decreases significantly in the transition from the parent vessel to the daughter vessels due to the higher total cross-sectional area of the daughter vessels as compared to the parent vessel. This decrease in velocity is partially recovered along the arteries due to the tapering of the blood vessels. It can also be observed from the results that the pressure distributions and pressure drops along the vascular system are in good agreement with the physiological data found in the literature. The results also show that the velocity profiles immediately following a bifurcation are not initially symmetric, with their maxima shifted toward the inner part of the bifurcation in the daughter vessels. Finally, the results show that the maximum deformation is about 2% of the average vessel radius, which is relatively small and typical for small arteries. (C) 2015 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.icheatmasstransfer.2015.06.010
dc.identifier.endpage58en_US
dc.identifier.issn0735-1933
dc.identifier.issn1879-0178
dc.identifier.scopus2-s2.0-84937032126en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage51en_US
dc.identifier.urihttps://doi.org/10.1016/j.icheatmasstransfer.2015.06.010
dc.identifier.urihttps://hdl.handle.net/20.500.14551/19197
dc.identifier.volume67en_US
dc.identifier.wosWOS:000362143700008en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofInternational Communications In Heat And Mass Transferen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBlood Flowen_US
dc.subjectBifurcationen_US
dc.subjectArterial Complianceen_US
dc.subjectTaperingen_US
dc.subjectArterial Deformationen_US
dc.subjectBoundary Modelen_US
dc.subjectFractal Modelsen_US
dc.subjectSimulationen_US
dc.subjectAnastomosesen_US
dc.subjectValidationen_US
dc.titleA numerical model of pulsatile blood flow in compliant arteries of a truncated vascular systemen_US
dc.typeArticleen_US

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