| 用晶格Boltzmann方法模拟动脉分叉流场 |
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| 引用本文： | 康秀英,刘大禾,周静,金永娟. 用晶格Boltzmann方法模拟动脉分叉流场[J]. 北京师范大学学报(自然科学版), 2005, 41(4): 364-368 |
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| 作者姓名： | 康秀英 刘大禾 周静 金永娟 |
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| 作者单位： | 北京师范大学物理学系,100875,北京;中国医学科学院血液学研究所,300020,天津 |
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| 基金项目： | 国家自然科学基金，教育部科学技术研究项目 |
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| 摘 要： | 简要介绍了晶格Boltzmann方法(LBM),它是模拟流体流动以及为复杂物理现象建模的一个新工具,比传统的数值模拟方法有许多独特的优点,特别是在处理复杂边界方面.并应用LBM对动脉分叉的流场在不同雷诺数情况下进行模拟,给出了速度、剪切应力和压力在分叉处的分布,并且分析了分支管内流体分离区的存在.流体在分离区内几乎处于停滞状态,剪切率非常小,容易在此处形成动脉粥硬化.
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| 关 键 词： | 晶格Boltzmann方法 曲线边界条件 动脉分叉 分离区 |
| 收稿时间： | 2004-12-08 |
| 修稿时间： | 2004-12-08 |
SIMULATIONS OF THE AORTIC BIFURCATION FLOW USING LATTICE BOLTZMANN METHOD |
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| Kang Xiuying,Liu Dahe,Zhou Jing,Jin Yongjuan. SIMULATIONS OF THE AORTIC BIFURCATION FLOW USING LATTICE BOLTZMANN METHOD[J]. Journal of Beijing Normal University(Natural Science), 2005, 41(4): 364-368 |
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| Authors: | Kang Xiuying Liu Dahe Zhou Jing Jin Yongjuan |
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| Affiliation: | 1 Department of Physics, Beijing Normal University, 100875, Beijing, China ; 2 Institute of Hematology, Chinese Academy of Medical Sciences, 300020,Tianjin, China |
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| Abstract: | Lattice Boltzmann method (LBM) has recently been proved competitive for studying the domain of fluid flow for various physics system with complex boundary. LBM has been used in hemodynamics to simulate blood flow characteristics. In this study, lattice Boltzmann method (LBM) is used to simulate the conditions at an aortic bifurcation, and some flow information about its velocity, shear stress and pressure is given out. Moreover, the separation zones in the branches revealed with the increase of the Reynolds number are observed where disposition of particular blood continents might occur to form arteriosclerosis. |
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| Keywords: | lattice Boltzmann method(LBM) curved boundary conditions aortic bifurcation separation zone |
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