期刊
PHYSICAL REVIEW E
卷 80, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.80.021902
关键词
biomembranes; blood vessels; cell motility; haemodynamics; haemorheology; shear flow; viscosity
资金
- Ministry of Education, Culture, Sports, Science, and Technology of Japan
The dynamics of red blood cells (RBCs) in simple shear flow was studied using a theoretical approach based on three variables: a shape parameter, the inclination angle theta, and phase angle phi of the membrane rotation. At high shear rate and low viscosity contrast of internal fluid, RBCs exhibit tank-treading motion, where phi rotates with swinging oscillation of shape and theta. At low shear rate, tumbling motion occurs and theta rotates. In the middle region between these two phases, it is found that synchronized rotation of phi and theta with integer ratios of the frequencies occurs in addition to intermittent rotation. These dynamics are robust to the modification of the potential of the RBC shape and membrane rotation. Our results agree well with recent experiments.
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