Computer Simulation Study of Collective Phenomena in Dense Suspensions of Red Blood Cells under Shear - Softcover

Kruger, Timm

 
9783834823755: Computer Simulation Study of Collective Phenomena in Dense Suspensions of Red Blood Cells under Shear
Softcover
ISBN 10: 3834823759 ISBN 13: 9783834823755
Verlag: Vieweg+Teubner Verlag, 2012

Inhaltsangabe

The rheology of dense red blood cell suspensions is investigated via computer simulations based on the lattice Boltzmann, the immersed boundary, and the finite element methods. The red blood cells are treated as extended and deformable particles immersed in the ambient fluid. In the first part of the work, the numerical model and strategies for stress evaluation are discussed. In the second part, the behavior of the suspensions in simple shear flow is studied for different volume fractions, particle deformabilities, and shear rates. Shear thinning behavior is recovered. The existence of a shear-induced transition from a tumbling to a tank-treading motion is demonstrated. The transition can be parameterized by a single quantity, namely the effective capillary number. It is the ratio of the suspension stress and the characteristic particle membrane stress. At the transition point, a strong increase in the orientational order of the red blood cells and a significant decrease of the particle diffusivity are observed. However, the average cell deformation shows no signature of the transition.

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Über die Autorin bzw. den Autor

Timm Krüger is physicist with focus on computational modeling of complex fluids at the Department of Applied Physics, Eindhoven University of Technology.

Von der hinteren Coverseite

The rheology of dense red blood cell suspensions is investigated via computer simulations based on the lattice Boltzmann, the immersed boundary, and the finite element methods. The red blood cells are treated as extended and deformable particles immersed in the ambient fluid. In the first part of the work, the numerical model and strategies for stress evaluation are discussed. In the second part, the behavior of the suspensions in simple shear flow is studied for different volume fractions, particle deformabilities, and shear rates. Shear thinning behavior is recovered. The existence of a shear-induced transition from a tumbling to a tank-treading motion is demonstrated. The transition can be parameterized by a single quantity, namely the effective capillary number. It is the ratio of the suspension stress and the characteristic particle membrane stress. At the transition point, a strong increase in the orientational order of the red blood cells and a significant decrease of the particle diffusivity are observed. However, the average cell deformation shows no signature of the transition.

„Über diesen Titel“ kann sich auf eine andere Ausgabe dieses Titels beziehen.

Verlag
Vieweg+Teubner Verlag
Erscheinungsdatum
2012
Sprache
Englisch
ISBN 10 
3834823759
ISBN 13 
9783834823755
Einband
Taschenbuch
Anzahl der Seiten
180
Kontakt zum Hersteller
Springer-Verlag GmbH
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