3-D numerical simulation of blood flow through models of the human aorta
3-D numerical simulation of blood flow through models of the human aorta
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DOI：
10.1115/1.1992521
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发表时间：
2005-10-01
影响因子：
1.7
通讯作者：
McGloughlin, T
中科院分区：
文献类型：
--
作者：
Morris, L;Delassus, P;McGloughlin, T
对一名受试者进行了主动脉螺旋计算机断层扫描 (CT) 扫描，并检查了三种模型变化。所有三个模型的计算流体动力学模型显示，沿主动脉弓的速度轮廓存在变化，边界层生长和再循环区域存在差异。再往下游，所有三个模型在最大速度期间都显示出非常相似的速度分布，但在脉冲的减速部分中出现差异。从瞬态 3D 计算流体动力学获得的流动模式受到不同重建方法和流动脉动性的影响。分析基于 CT 扫描的模型时需要小心。
A Spiral Computerized Tomography (CT) scan of the aorta were obtained from a single subject and three model variations were examined. Computational fluid dynamics modeling of all three models showed variations in the velocity contours along the aortic arch with differences in the boundary layer growth and recirculation regions. Further downstream, all three models showed very similar velocity profiles during maximum velocity with differences occurring in the decelerating part of the pulse. Flow patterns obtained from transient 3-D computational fluid dynamics are influenced by different reconstruction methods and the pulsatility of the flow. Caution is required when analyzing models based on CT scans.