Shape transitions of fluid vesicles and red blood cells in capillary flows

机译：毛细血管中液体小泡和红细胞的形状转变

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The dynamics of fluid vesicles and red blood cells (RBCs) in cylindrical capillary flow is studied by using a three-dimensional mesoscopic simulation approach. As flow velocity increases, a model RBC is found to transit from a nonaxisymmetric discocyteto an axisymmetric parachute shape (coaxial with the flow axis), while a fluid vesicle is found to transit from a discocyte to a prolate ellipsoid. Both shape transitions reduce the flow resistance. The critical velocities of the shape transitions are linearly dependent on the bending rigidity and on the shear modulus of the membrane. Slipper-like shapes of the RBC model are observed around the transition velocities. Our results are in good agreement with experiments on RBCs.

机译：通过使用三维介观模拟方法研究圆柱毛细血管流中的液体囊泡和红细胞（RBC）的动力学。随着流速的增加，发现模型RBC从非轴对称的盘状细胞转变为轴对称的降落伞形状（与流动轴同轴），而流体囊泡则从盘状细胞转变为扁平的椭球。两种形状过渡都会降低流动阻力。形状转变的临界速度线性地取决于膜的弯曲刚度和剪切模量。在过渡速度附近可以看到RBC模型的拖鞋状形状。我们的结果与RBC的实验非常吻合。

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期刊名称 Proceedings of the National Academy of Sciences of the United States of America
作者
Hiroshi Noguchi; Gerhard Gompper;
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作者单位

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年(卷),期 2005(102),40
年度 2005
页码 14159–14164
总页数 6
原文格式 PDF
正文语种
中图分类
关键词
mesoscale hydrodynamics simulation microfluidics shape transformations;

机译：中尺度流体动力学模拟;微流控;形状变换;

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专利

1. Shape transitions of fluid vesicles and red blood cells in capillary flows [J] . Noguchi H, Gompper G Proceedings of the National Academy of Sciences of the United States of America . 2005,第40期

机译：毛细血管中液体小泡和红细胞的形状转变
2. Numerical simulation of the motion of red blood cells and vesicles in microfluidic flows [J] . Thomas Franke, Ronald H. W. Hoppe, Christopher Linsenmann, Computing and visualization in science . 2011,第4期

机译：红细胞和囊泡在微流中运动的数值模拟
3. APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Microscopic Measurements of Axial Accumulation of Red Blood Cells in Capillary Flows Effects of Deformability [J] . Takahiro Sasaki, Junji Seki, Tomoaki Itano, Bulletin of the American Physical Society . 2017,第14期

机译：APS -70TH流体动力学APS划分的年会 - 事件 - 毛细血管流动轴向血细胞轴向积聚的微观测量变形性的影响
4. A Monolithic Fluid Structure Interaction Algorithm Applied to Red Blood Cells in a Capillary [C] . Ayse Cetin, Mehmet Sahin AIAA Fluid Dynamics Conference;AIAA Aviation Forum . 2017

机译：一种应用于毛细管中红细胞的整体流体结构相互作用算法
5. Orbital Drift, Stress-Free Configuration, and Shape Memory of Red Blood Cells in Shear Flow [D] . Cordasco, Daniel. 2017

机译：剪切流中红细胞的轨道漂移，无应力配置和形状记忆
6. Dual shape recovery of red blood cells flowing out of a microfluidic constriction [O] . A. Amirouche, J. Esteves, A. Lavoignat, 2020

机译：流出微流体收缩的红细胞双重形状恢复
7. Shape transitions of fluid vesicles and red blood cells in capillary flows [O] . Noguchi, Hiroshi, Gompper, Gerhard 2005

机译：毛细血管中液体小泡和红细胞的形状转变
8. Membrane Fluidity and Shape of Human Red Blood Cells are Altered by PhysiologicalLevels of Hydrostatic Pressure [R] . Barshtein, G., Bergelson, L., Dagan, A., 1994

机译：人体红细胞的膜流动性和形状通过静水压力的生理水平改变

Shape transitions of fluid vesicles and red blood cells in capillary flows

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