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Deformation of Two-Dimensional Nonuniform-Membrane Red Blood Cells Simulated by a Lattice |
| LI Hua-Bing, JIN Li, QIU Bing |
| Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004 |
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| Cite this article: |
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LI Hua-Bing, JIN Li, QIU Bing 2008 Chin. Phys. Lett. 25 4042-4045 |
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Abstract To study two-dimensional red blood cells deforming in a shear flow with the membrane nonuniform on the rigidity and mass, the membrane is discretized into equilength segments. The fluid inside and outside the red blood cell is simulated by the D2Q9 lattice Boltzmann model and the hydrodynamic forces exerted on the membrane from the inner and outer of the red blood cell are calculated by a stress-integration method. Through the global deviation from the curvature of uniform-membrane, we find that when the membrane is nonuniform on the rigidity, the deviation first decreases with the time increases and implies that the terminal profile of the red blood cell is static. To a red blood cell with the mass nonuniform on the membrane, the deviation becomes more large, and the mass distribution affects the profile of the two sides of the flattened red blood cell in a shear flow.
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47.11.-j
82.70.-y
47.10.-g
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Received: 23 June 2008
Published: 25 October 2008
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| PACS: |
47.11.-j
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(Computational methods in fluid dynamics)
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82.70.-y
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(Disperse systems; complex fluids)
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47.10.-g
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(General theory in fluid dynamics)
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