Lattice Boltzmann simulations on the tumbling to tank-treading transition: effects of membrane viscosity
Data files
Jul 09, 2021 version files 15.12 KB
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Ca_vs_lambda.gnu
3.38 KB
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Ca_vs_mu.gnu
3.50 KB
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cordasco-sep.csv
167 B
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deltaCa_vs_lambda.gnu
3.07 KB
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deltaCa_vs_mu.gnu
3.56 KB
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trans_lambda.dat
660 B
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trans.dat
779 B
Abstract
The tumbling to tank-treading (TB-TT) transition for red blood cells (RBCs) has been widely investigated, with a main focus on the effects of the viscosity ratio λ (i.e., the ratio between the viscosities of the fluids inside and outside the membrane) and the shear rate γ ̇ applied to the RBC. However, the membrane viscosity μm plays a major role in a realistic description of RBC’s dynamics, and only a few works have systematically focused on its effects on the TB-TT transition. In this work, we provide a parametric investigation on the effect of membrane viscosity μm on the TB- TT transition, for a single RBC. It is found that, at fixed viscosity ratios λ, larger values of μm lead to an increased range of values of capillary number at which the TB-TT transition occurs. We systematically quantify such an increase by means of mesoscale numerical simulations based on the lattice Boltzmann models.