Modelování stacionárního proudění zobecněné newtonské kapaliny 3D koronárním bypassem

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F08%3A00500579" target="_blank" >RIV/49777513:23520/08:00500579 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

On the modelling of steady generalized Newtonian flows in a 3D coronary bypass

Popis výsledku v původním jazyce

Bloods non-Newtonian behaviour is investigated in an idealized coronary 3D bypass model, which includes both the proximal and distal parts of the occluded native artery and the connected end-to-side bypass graft. Considering the blood to be a generalizedNewtonian fluid, the shear-dependent viscosity is given by two well-known macroscopic non-Newtonian models (the Carreau-Yasuda model and the modified Cross model). Both non-Newtonian steady flow fields are analyzed with regard to the bypass geometry andare compared with the case of the Newtonian fluid. In order to perform all numerical simulations, we developed an incompressible Navier-Stokes solver based on the pseudo-compressibility approach and on the cell-centred finite volume formulation of the central explicit fourth-stage Runge-Kutta time stepping scheme defined on unstructured hexahedral computational grid.

Název v anglickém jazyce

On the modelling of steady generalized Newtonian flows in a 3D coronary bypass

Popis výsledku anglicky

Bloods non-Newtonian behaviour is investigated in an idealized coronary 3D bypass model, which includes both the proximal and distal parts of the occluded native artery and the connected end-to-side bypass graft. Considering the blood to be a generalizedNewtonian fluid, the shear-dependent viscosity is given by two well-known macroscopic non-Newtonian models (the Carreau-Yasuda model and the modified Cross model). Both non-Newtonian steady flow fields are analyzed with regard to the bypass geometry andare compared with the case of the Newtonian fluid. In order to perform all numerical simulations, we developed an incompressible Navier-Stokes solver based on the pseudo-compressibility approach and on the cell-centred finite volume formulation of the central explicit fourth-stage Runge-Kutta time stepping scheme defined on unstructured hexahedral computational grid.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Engineering Mechanics

ISSN

1802-1484

e-ISSN

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Svazek periodika

15

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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