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

Kruger, Timm

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

Sinossi

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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Informazioni sull?autore

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

Dalla quarta di copertina

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.

Le informazioni nella sezione "Su questo libro" possono far riferimento a edizioni diverse di questo titolo.

Editore
Vieweg+Teubner Verlag
Data di pubblicazione
2012
Lingua
Inglese
ISBN 10 
3834823759
ISBN 13 
9783834823755
Rilegatura
Copertina flessibile
Numero di pagine
180
Contatto del produttore
Springer-Verlag GmbH
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