Lattice Boltzmann simulation of blood cell behavior at microvascular bifurcations
Lattice Boltzmann simulation of blood cell behavior at microvascular bifurcations
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DOI：
10.1016/j.matcom.2006.05.010
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发表时间：
2006-09
期刊：
影响因子：
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通讯作者：
T. Hyakutake;Takeshi Matsumoto;S. Yanase
中科院分区：
文献类型：
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作者：
T. Hyakutake;Takeshi Matsumoto;S. Yanase
对平面泊肃叶流和二维分叉流中的颗粒悬浮液进行格子玻尔兹曼模拟，以研究微血管分叉处的血细胞行为。 The simulation results of Poiseuille flow at a low hematocrit reveal that particles are concentrated between the centerline and the wall. This phenomenon indicates the occurrence of the Segré–Silberberg effect.另一方面，随着血细胞比容的增加，这种效应消失，并且在壁和中心线附近流动的颗粒数量增加。在分叉流的情况下，在高血细胞比容下，流向子分支的分数粒子通量几乎与流向同一分支的分数总体流相似。 However, at a low hematocrit, the fractional particle flux against the fractional bulk flow increases.
Lattice Boltzmann simulations of a particulate suspension in plane Poiseuille flow and two-dimensional bifurcation flow are conducted to investigate the blood cell behavior at microvascular bifurcations. The simulation results of Poiseuille flow at a low hematocrit reveal that particles are concentrated between the centerline and the wall. This phenomenon indicates the occurrence of the Segré–Silberberg effect. On the other hand, as the hematocrit increases, this effect disappears and the number of particles flowing near the wall and the centerline increases. In the case of bifurcation flow, at a high hematocrit, the fractional particle flux to a daughter branch is almost similar to the fractional bulk flow to the same branch. However, at a low hematocrit, the fractional particle flux against the fractional bulk flow increases.