Application of a novel particle tracking algorithm in the flow visualization of an artificial abdominal aortic aneurysm.
Application of a novel particle tracking algorithm in the flow visualization of an artificial abdominal aortic aneurysm.
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DOI：
10.3233/bme-141074
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发表时间：
2014
影响因子：
1
通讯作者：
Yang Zhang;Yuan Wang;W. He;Bin Yang
中科院分区：
文献类型：
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作者：
Yang Zhang;Yuan Wang;W. He;Bin Yang
提出了一种新的基于Voronoi图(VD)的粒子跟踪测速算法(VD-PTV)。通过一个广泛使用的人工流和经典参考算法的试验，验证了VD-PTV对脉动流的稳健性。然后将所提出的算法应用于模拟人体主动脉血流的搏动循环系统中的人工腹主动脉瘤内的流动。结果表明，由于脉动后的回流涡流，大颗粒在上游边界容易聚集。这一定性描述与VD-PTV一起，为今后需要高水平量化的工作奠定了基础。
A novel Particle Tracking Velocimetry (PTV) algorithm based on Voronoi Diagram (VD) is proposed and briefed as VD-PTV. The robustness of VD-PTV for pulsatile flow is verified through a test that includes a widely used artificial flow and a classic reference algorithm. The proposed algorithm is then applied to visualize the flow in an artificial abdominal aortic aneurysm included in a pulsatile circulation system that simulates the aortic blood flow in human body. Results show that, large particles tend to gather at the upstream boundary because of the backflow eddies that follow the pulsation. This qualitative description, together with VD-PTV, has laid a foundation for future works that demand high-level quantification.