Rotational behaviour of red blood cells in suspension: a mesoscale simulation study

Rotational behaviour of red blood cells in suspension: a mesoscale simulation study
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悬浮红细胞的旋转行为:中尺度模拟研究

DOI:
10.1098/rsta.2011.0086
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发表时间:
2010
期刊:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子:
--
通讯作者:
F. Toschi
F. Toschi
中科院分区:
--
文献类型:
--
作者:
F. Janoschek;Francesca Mancini;Jens Harting;F. Toschi

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血液作为红细胞悬浮液的性质使得计算血液动力学成为一项艰巨的任务。我们的粗粒度的血液模型,它建立在一个晶格玻尔兹曼方法的软颗粒悬浮液,使研究的集体行为的顺序106细胞悬浮液。在演示了Kolmogorov流中的粘度测量之后,我们重点讨论了Couette流中细胞取向和旋转的统计分析。我们量化的平均倾斜度相对于流量和作为剪切速率和红细胞压积的函数的α阶。我们进一步记录的涡度方向周围的旋转周期的分布,并发现一个明显的峰值附近的理论值为自由模型细胞,即使细胞-细胞相互作用表现出自己在一个相当大的宽度的分布。
The nature of blood as a suspension of red blood cells makes computational haemodynamics a demanding task. Our coarse-grained blood model, which builds on a lattice Boltzmann method for soft particle suspensions, enables the study of the collective behaviour of the order of 106 cells in suspension. After demonstrating the viscosity measurement in Kolmogorov flow, we focus on the statistical analysis of the cell orientation and rotation in Couette flow. We quantify the average inclination with respect to the flow and the nematic order as a function of shear rate and haematocrit. We further record the distribution of rotation periods around the vorticity direction and find a pronounced peak in the vicinity of the theoretical value for free model cells, even though cell–cell interactions manifest themselves in a substantial width of the distribution.
DOI: 10.1103/physreve.75.066707
发表时间: 2007-06-01
期刊: PHYSICAL REVIEW E
影响因子: 2.4
作者:
Dupin, Michael M.;Halliday, Ian;Munn, Lance L.
通讯作者: Munn, Lance L.
软物体悬浮液中的颗粒应力
DOI: 10.1098/rsta.2011.0090
发表时间: 2011
期刊: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子: --
作者:
T. Krüger;F. Varnik;D. Raabe
通讯作者: D. Raabe