dorsal/arxiv
View SchemaShape changes and motion of a vesicle in a fluid using a lattice Boltzmann model
| Authors | Huabing Li, Houhui Yi, Xiaowen Shan, Haiping Fang |
|---|---|
| Categories | |
| ArXiv ID | physics/0607074 |
| URL | https://arxiv.org/abs/physics/0607074 |
Abstract
We study the deformation and motion of an erythrocyte in fluid flows via a lattice Boltzmann method. To this purpose, the bending rigidity and the elastic modulus of isotropic dilation are introduced and incorporated with the lattice Boltzmann simulation, and the membrane-flow interactions on both sides of the membrane are carefully examined. We find that the static biconcave shape of an erythrocyte is quite stable and can effectively resist the pathological changes on their membrane. Further, our simulation results show that in shear flow, the erythrocyte will be highly flattened and undergo tank tread-like motion. This phenomenon has been observed by experiment very long time ago, but it has feazed the boundary integral and singularity methods up to the present. Because of its intrinsically parallel dynamics, this lattice Boltzmann method is expected to find wide applications for both single and multi-vesicles suspension as well as complex open membranes in various fluid flows for a wide range of Reynolds numbers.
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"abstract": "We study the deformation and motion of an erythrocyte in fluid flows via a\nlattice Boltzmann method. To this purpose, the bending rigidity and the elastic\nmodulus of isotropic dilation are introduced and incorporated with the lattice\nBoltzmann simulation, and the membrane-flow interactions on both sides of the\nmembrane are carefully examined. We find that the static biconcave shape of an\nerythrocyte is quite stable and can effectively resist the pathological changes\non their membrane. Further, our simulation results show that in shear flow, the\nerythrocyte will be highly flattened and undergo tank tread-like motion. This\nphenomenon has been observed by experiment very long time ago, but it has\nfeazed the boundary integral and singularity methods up to the present. Because\nof its intrinsically parallel dynamics, this lattice Boltzmann method is\nexpected to find wide applications for both single and multi-vesicles\nsuspension as well as complex open membranes in various fluid flows for a wide\nrange of Reynolds numbers.",
"arxiv_id": "physics/0607074",
"authors": [
"Huabing Li",
"Houhui Yi",
"Xiaowen Shan",
"Haiping Fang"
],
"categories": [
"physics.flu-dyn"
],
"title": "Shape changes and motion of a vesicle in a fluid using a lattice Boltzmann model",
"url": "https://arxiv.org/abs/physics/0607074"
},
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