Plasma skimming in vascular trees: Numerical estimates of symmetry recovery lengths
Plasma skimming in vascular trees: Numerical estimates of symmetry recovery lengths
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DOI：
10.3109/10739689509148278
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发表时间：
1995-01-01
期刊：
影响因子：
--
通讯作者：
Xiao, Jewen
中科院分区：
文献类型：
--
作者：
Carr, Russell T.;Xiao, Jewen
开发了一种新的血管树等离子体撇取模型，其中包括先前分叉处的干扰历史。该模型通过绘制通过连接处的流线来计算红细胞浓度分布的变化：然后通过细胞之间的随机碰撞计算该干扰的消散。该模型的数值解与连续分叉中等离子体撇取的实验数据进行了比较。使用该模型计算分叉下游的对称恢复长度的数值。将计算的对称恢复长度与仓鼠提睾肌的解剖测量值进行比较表明，红细胞浓度分布的不对称性对于直径低于 55 μm 的血管很重要。
A new model of plasma skimming in vascular trees that includes the history of disturbances at previous bifurcations is developed. The model calculates the shift in the red blood cell concentration profile by mapping streamlines through the junction: it then computes the dissipation of that disturbance through random collisions among the cells. A numerical solution of this model is compared to experimental data on plasma skimming in serial bifurcations. Numerical values of symmetry recovery lengths downstream of the bifurcation are calculated using the model. Comparison of the computed symmetry recovery lengths with anatomical measurements in hamster cremaster muscle indicate that asymmetries in red blood cell concentration profiles are important in vessels with diameters below 55 mu-m.