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dc.contributor.authorJonášová, Alena
dc.contributor.authorVimmr, Jan
dc.contributor.authorBublík, Ondřej
dc.date.accessioned2013-02-28T08:22:13Z
dc.date.available2013-02-28T08:22:13Z
dc.date.issued2011
dc.identifier.citationApplied and Computational Mechanics. 2011, vol. 5, no. 1, p. 29-44.en
dc.identifier.issn1802-680X (Print)
dc.identifier.issn2336-1182 (Online)
dc.identifier.urihttp://www.kme.zcu.cz/acm/index.php/acm/article/view/140/91
dc.identifier.urihttp://hdl.handle.net/11025/1376
dc.description.abstractThe present study is focused on the analysis of pulsatile blood flow in complete idealized 3D bypass models in dependence on three main geometrical parameters (stenosis degree, junction angle and diameter ratio). Assuming the blood to be an incompressible Newtonian fluid, the non-linear system of Navier-Stokes equations is integrated in time by a fully implicit second-order accurate fractional-step method. The space discretization is performed with the help of the cell-centred finite volume method formulated for unstructured tetrahedral grids. In order to model a realistic coronary blood flow, a time-dependent flow rate taken from corresponding literature is considered. For the analysis of obtained numerical results, special emphasis is placed on their comparison in the form of velocity isolines at several selected cross-sections during systolic and diastolic phases. The remainder of this paper is devoted to discussion of walls shear stress distribution and its oscillatory character described by the oscillatory shear index with regard to areas prone to development of intimal hyperplasia or to thrombus formation.en
dc.format16 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherUniversity of West Bohemiaen
dc.relation.ispartofseriesApplied and Computational Mechanicsen
dc.rights© 2011 - University of West Bohemia. All rights reserved.en
dc.subjectmodel bypassucs
dc.subjectpujsující průtok krvecs
dc.subjectmíra stenózycs
dc.subjectmetoda dělení časového krokucs
dc.titleNumerical analysis of bypass model geometrical parameters influence on pulsatile blood flowen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.subject.translatedbypass modelen
dc.subject.translatedpulsatile blood flowen
dc.subject.translatedstenosis degreeen
dc.subject.translatedfractional-step methoden
dc.type.statusPeer-revieweden
Appears in Collections:Volume 5, number 1 (2011)
Články / Articles (KME)
Volume 5, number 1 (2011)

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