About: Effects of three geometrical parameters on pulsatile blood flow in complete idealised coronary bypasses

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About: Effects of three geometrical parameters on pulsatile blood flow in complete idealised coronary bypasses Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The main objective of the study is to perform a numerical analysis of physiological blood flow in a complete idealised 3D coronary bypass model as a function of three significant geometrical parameters: stenosis degree (50%, 65%, 75%, 85%, 100%), junction angle (alfa = 30°, 35°, 45°, 55°, 70°) and diameter ratio (D:d = 1:0.5, 1:1, 1:1.5, 1:1?0.5, 1:0.5?1). All computations are performed with an incompressible Navier-Stokes solver, the algorithm for which is based on a fractional step scheme and finite volume method formulated for hybrid unstructured tetrahedral grids. The time discretisation of the incompressible Navier-Stokes equations is performed using the implicit second-order Crank-Nicolson scheme. The computed velocity profiles and distributions of cycle-averaged wall shear stress (WSS) and oscillatory shear index (OSI) are analysed. The tendency of blood flow to be influenced by the specified geometrical parameter is discussed with regard to the possibility of intimal thickening and thrombus formation. The main objective of the study is to perform a numerical analysis of physiological blood flow in a complete idealised 3D coronary bypass model as a function of three significant geometrical parameters: stenosis degree (50%, 65%, 75%, 85%, 100%), junction angle (alfa = 30°, 35°, 45°, 55°, 70°) and diameter ratio (D:d = 1:0.5, 1:1, 1:1.5, 1:1?0.5, 1:0.5?1). All computations are performed with an incompressible Navier-Stokes solver, the algorithm for which is based on a fractional step scheme and finite volume method formulated for hybrid unstructured tetrahedral grids. The time discretisation of the incompressible Navier-Stokes equations is performed using the implicit second-order Crank-Nicolson scheme. The computed velocity profiles and distributions of cycle-averaged wall shear stress (WSS) and oscillatory shear index (OSI) are analysed. The tendency of blood flow to be influenced by the specified geometrical parameter is discussed with regard to the possibility of intimal thickening and thrombus formation. (en)
Title	Effects of three geometrical parameters on pulsatile blood flow in complete idealised coronary bypasses Effects of three geometrical parameters on pulsatile blood flow in complete idealised coronary bypasses (en)
skos:prefLabel	Effects of three geometrical parameters on pulsatile blood flow in complete idealised coronary bypasses Effects of three geometrical parameters on pulsatile blood flow in complete idealised coronary bypasses (en)
skos:notation	RIV/49777513:23520/12:43915773!RIV13-MSM-23520___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0090)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Vimmr, Jan Bublík, Ondřej Jonášová, Alena
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Západočeská univerzita v Plzni / Fakulta aplikovaných věd
http://linked.open...dnocenehoVysledku	133508
http://linked.open...ai/riv/idVysledku	RIV/49777513:23520/12:43915773
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	coronary bypass, pulsatile blood flow, stenosis degree, junction angle, diameter ratio, numerical simulation (en)
http://linked.open.../riv/klicoveSlovo	numerical simulation pulsatile blood flow coronary bypass diameter ratio junction angle stenosis degree
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[64E449B7E5C4]
http://linked.open...i/riv/nazevZdroje	COMPUTERS & FLUIDS
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	NTIS - New Technologies for Information Society
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	69
http://linked.open...iv/tvurceVysledku	Bublík, Ondřej Jonášová, Alena Vimmr, Jan
issn	0045-7930
number of pages	25 (xsd:int)
http://localhost/t...ganizacniJednotka	23520

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