Počet záznamů: 1
On the shear-thinning and viscoelastic effects of blood flow under various flow rates
0364538 - UT-L 2012 RIV US eng J - Článek v odborném periodiku
Bodnár, Tomáš - Sequeira, A. - Prosi, M.
On the shear-thinning and viscoelastic effects of blood flow under various flow rates.
Applied Mathematics and Computation. Roč. 217, č. 11 (2011), s. 5055-5067 ISSN 0096-3003
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: non-Newtonian * viscoelastic * Oldroyd-B * finite-volume * blood flow
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 1.317, rok: 2011
The aim of this paper is to describe and discuss the results of numerical comparative study performed in order to demonstrate and quantify some of the most relevant non-Newtonian characteristics of blood flow in medium-sized blood vessels, namely its shear-thinning and viscoelastic behavior. The models studied in this work are the classical Newtonian and Oldroyd-B models, as well as their generalized (shear-thinning) modifications. Numerical tests are performed on three-dimensional geometries, namely an idealized axisymmetric stenosis and a realistic stenosed carotid bifurcation reconstructed from medical images. The numerical solution of the system of governing equations is obtained by a finite-volume method on a structured grid. Model sensitivity tests are achieved with respect to the characteristic flow rate to evaluate its impact on the observed non-Newtonian effects.
Trvalý link: http://hdl.handle.net/11104/0200004