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Statements

Subject Item
n2:RIV%2F49777513%3A23520%2F06%3A00000418%21RIV07-MSM-23520___
rdf:type
skos:Concept n21:Vysledek
dcterms:description
This study deals with numerical simulation of a blood flow in a complete 2-D bypass model. The idealized 2-D model of a fully blocked host tube with an end-to-side bypass graft is considered. The vessel walls are assumed to be impermeable and rigid. The problem of a blood flow is solved as an isothermal steady laminar flow of incompressible Newtonian fluid using the pseudo-compressibility method. The spatial discretization of the unsteady non-linear system of the incompressible Navier-Stokes equations in pseudo-transient conservative form is performed by the cell-centered finite volume method on a structured quadrilateral grid. Its time integration is realized by the widely used explicit two-step MacCormack scheme with artificial dissipation. The computed velocity and pressure distributions in the entire bypass model are analyzed and compared to the results obtained from the software package Fluent. This study deals with numerical simulation of a blood flow in a complete 2-D bypass model. The idealized 2-D model of a fully blocked host tube with an end-to-side bypass graft is considered. The vessel walls are assumed to be impermeable and rigid. The problem of a blood flow is solved as an isothermal steady laminar flow of incompressible Newtonian fluid using the pseudo-compressibility method. The spatial discretization of the unsteady non-linear system of the incompressible Navier-Stokes equations in pseudo-transient conservative form is performed by the cell-centered finite volume method on a structured quadrilateral grid. Its time integration is realized by the widely used explicit two-step MacCormack scheme with artificial dissipation. The computed velocity and pressure distributions in the entire bypass model are analyzed and compared to the results obtained from the software package Fluent. Tato studie se zabývá numerickou simulací proudění krve úplným dvourozměrným modelem bypassu. Pro výpočet je uvažován idealizovaný model plně uzavřené tepny s bypassovým štěpem typu „end-to-side“. Stěny cév jsou uvažovány nepropustné a nepoddajné. Proudění krve je řešeno pomocí metody umělé stlačitelnosti jako izotermické stacionární laminární proudění nestlačitelné Newtonské tekutiny. Prostorová diskretizace nelineárního systému Navierových-Stokesových rovnic v konzervativním tvaru je provedena metodou konečných objemů na strukturované čtyřúhelníkové síti. Pro časovou integraci je zvoleno explicitní dvoukrokové MacCormackovo schéma s umělou disipací. V
dcterms:title
On modelling of steady flow in a bypass model Modelování stacionárního proudění bypassem On modelling of steady flow in a bypass model
skos:prefLabel
On modelling of steady flow in a bypass model Modelování stacionárního proudění bypassem On modelling of steady flow in a bypass model
skos:notation
RIV/49777513:23520/06:00000418!RIV07-MSM-23520___
n3:strany
689-696
n3:aktivita
n13:Z
n3:aktivity
Z(MSM4977751303)
n3:dodaniDat
n12:2007
n3:domaciTvurceVysledku
n19:1589091
n3:druhVysledku
n4:D
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
490363
n3:idVysledku
RIV/49777513:23520/06:00000418
n3:jazykVysledku
n10:eng
n3:klicovaSlova
bypass; incompressible flow; FVM; pseudo-compressibility method
n3:klicoveSlovo
n9:incompressible%20flow n9:bypass n9:FVM n9:pseudo-compressibility%20method
n3:kontrolniKodProRIV
[45DD7ADBA9E6]
n3:mistoKonaniAkce
Hrad Nečtiny
n3:mistoVydani
Pilsen
n3:nazevZdroje
Computational mechanics 2006
n3:obor
n16:BK
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n12:2006
n3:tvurceVysledku
Vimmr, Jan Jonášová, Alena
n3:typAkce
n11:EUR
n3:zahajeniAkce
2006-01-01+01:00
n3:zamer
n18:MSM4977751303
s:numberOfPages
8
n7:hasPublisher
Západočeská univerzita v Plzni
n20:isbn
80-7043-477-5
n8:organizacniJednotka
23520