| 狭窄程度对锥缩血管中脉动流的影响 |
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| 引用本文： | 刘国涛,王先菊,艾保全,刘良钢.狭窄程度对锥缩血管中脉动流的影响[J].计算物理,2005,22(4):351-357. |
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| 作者姓名： | 刘国涛 王先菊 艾保全 刘良钢 |
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| 作者单位： | 中山大学物理系,广东,广州,510275;中山大学物理系,广东,广州,510275;中山大学物理系,广东,广州,510275;中山大学物理系,广东,广州,510275 |
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| 基金项目： | Supported by the National Natural Science Foundation of Chinaunder Grant Nos10275099 and 10175096 |
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| 摘 要： | 建立了一个轴对称的狭窄锥缩刚性动脉模型.利用不可压缩的N-S方程作为计算的理论基础,采用有限差分方案进行数值分析.提供了3种狭窄程度下的管壁切应力分布曲线并进行了分析和比较,同时给出了模型M3(h/R0=1/3)在一个流动周期内的流线图.结果显示狭窄附近的流场受到了干扰,特别是狭窄的喉部及其下游区域的流场,并且狭窄程度越严重,狭窄对流场的影响就越大.
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| 关 键 词： | 脉动流 管壁切应力 狭窄锥缩动脉 数值分析 |
| 文章编号： | 1001-246X（2005）04-0351-07 |
| 收稿时间： | 2003-12-11 |
| 修稿时间： | 2004-11-18 |
Effects of Stenosis Severity on Pulsating Flow in a Tapered Artery |
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| LIU Guo-Tao,WANG Xian-ju,AI Bao-quan,LIU Liang-gang.Effects of Stenosis Severity on Pulsating Flow in a Tapered Artery[J].Chinese Journal of Computational Physics,2005,22(4):351-357. |
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| Authors: | LIU Guo-Tao WANG Xian-ju AI Bao-quan LIU Liang-gang |
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| Institution: | Department of Physics, Zhongshan University, Guangzhou 510275, China |
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| Abstract: | A mathematical model of pulsating flow in a tapered rigid artery with an axially symmetric stenosis is established. The incompressible Navier-Stokes equation for the flow field is solved numerically and a finite difference scheme is used to implement the numerical calculation. The distributions of the wall shear stress with three stenosis severity( h/R0 = 1/4,1/3,1/2) are provided and discussd. The stream function contour with h/R0 = 1/3 is given. The result shows that the stenosis disturbs the flow flied in the vicinity of the stenosis, especially at the throat and in the downstream. |
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| Keywords: | pulsating flow wall shear stress stenosis and tapered arteries numerical analysis |
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