Meshing strategy for bifurcation arteries in the context of blood flow simulation accuracy

The study presents a mesh dependency study for a carotid artery bifurcation geometry of a real-life specimen. The results of time-averaged velocity profiles at artery control surfaces and wall shear stresses are compared between a set of structured and unstructured meshes, with varying non–dimension...

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Veröffentlicht in:E3S web of conferences 2019-01, Vol.128, p.2003
Hauptverfasser: Lewandowska, Natalia, Mosiężny, Jędrzej
Format: Artikel
Sprache:eng
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Zusammenfassung:The study presents a mesh dependency study for a carotid artery bifurcation geometry of a real-life specimen. The results of time-averaged velocity profiles at artery control surfaces and wall shear stresses are compared between a set of structured and unstructured meshes, with varying non–dimensional boundary layer first element thickness (y+) parameter. A set of four meshes in total is considered: a full–hexagonal structured mesh, an unstructured tetrahedral mesh with prism inflation layer, both created for y+=1 and y+=30. Apart from numerical results, overall mesh creation work time, overall analysisstability are compared with the mesh quality results: cell non–orthogonality, cell skew and aspect ratio. Numerical results are validated against results of real–life CT examination performed in Poznań Medical University.
ISSN:2267-1242
2267-1242
DOI:10.1051/e3sconf/201912802003