title: Application of a novel particle tracking algorithm in the flow visualization of an artificial abdominal aortic aneurysm.
abstract: 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.
authors.affiliation: Department of Fluid Machinery and Engineering, Xi'an Jiaotong University, Xianning Western Road 28, Xi'an 710049, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Fluid Machinery and Engineering, Xi'an Jiaotong University, Xianning Western Road 28, Xi'an 710049, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Fluid Machinery and Engineering, Xi'an Jiaotong University, Xianning Western Road 28, Xi'an 710049, China.
authors.forename: Wenbo
authors.initials: W
authors.lastname: He
authors.affiliation: School of Chemical Engineering, Northwest University, Taibai Northern Road 229, Xi'an 710049, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
mesh_terms: D000465:Algorithms; D001012:Aorta, Abdominal / Q000503:physiopathology*; D017544:Aortic Aneurysm, Abdominal / Q000503:physiopathology*; D001783:Blood Flow Velocity; D001794:Blood Pressure; D003198:Computer Simulation; D006801:Humans; D008955:Models, Cardiovascular; D011673:Pulsatile Flow
keywords: Particle tracking velocimetry; Voronoi diagram; abdominal aortic aneurysm; aortic blood flow; pulsatile circulation system