Computational Fluid Dynamics Approach for Modeling a Non-Newtonian Blood Flow in a Split and Recombine Micromixer
Publikasjonsdetaljer
Tidsskrift : International Federation for Medical and Biological Engineering Proceedings , vol. 63 , p. 319–323 , 2018
Internasjonale standardnummer
:
Trykt
:
1680-0737
Elektronisk
:
1433-9277
Publikasjonstype : Vitenskapelig artikkel
Lenker
:
DOI
:
doi.org/10.1007/978-981-10-436...
ARKIV
:
hdl.handle.net/11250/2480586
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Kjetil Aune
Bibliotekleder
kjetil.aune@nofima.no
Sammendrag
In this work, the blood flow in a passive planar micromixer is analyzed in order to provide a case study for the use of different models of the blood dynamic viscosity in COMSOL Multiphysics. Regarding the Newtonian or non-Newtonian behavior, the blood is best approximated with a non-Newtonian model since its viscosity changes with dependence on the shear rate. The usual Newtonian model of blood viscosity, as well as two non-Newtonian models including Carreau model and the Power law model are used to study the wall shear stress. For the models study, a passive planar micromixer with ellipse-liked micropillars is proposed to operate in the laminar flow regime for high mixing efficiency.