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http://dx.doi.org/10.3795/KSME-B.2013.37.11.985

Flow Visualization of Arteriovenous Grafting Using PIV Technique  

Jeon, Min-Gyu (Graduate School, Refrigeration and Air-conditioning Engineering, Korea Maritime Univ.)
Kim, Hyoung-Ho (Dept. of Mechanical Engineering, Soongsil Univ.)
Suh, Sang-Ho (Dept. of Mechanical Engineering, Soongsil Univ.)
Choi, Young Ho (Department of Radiology, Seoul Nat'l University, Boramae Hospital)
Lee, Hyun-Jin (Graduate School, Refrigeration and Air-conditioning Engineering, Korea Maritime Univ.)
Doh, Deog-Hee (Division of Mechanical and Energy Systems Engineering, Korea Maritime Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.37, no.11, 2013 , pp. 985-990 More about this Journal
Abstract
An arteriovenous fistula is artificially produced using a graft for hemodialysis in patients. In an arteriovenous graft (AVG), the angle of its arterial or venous anastomosis play an important role in producing flows inside blood vessels, through which a stenosis may occur. Most studies thus far have focused on CFD results. In this study, a PIV technique is used to analyze the hemodynamic characteristics at the arterial or venous anastomosis of an AVG having an angle of $30^{\circ}C$. For flow dynamic similarity, the Reynolds number is set to be the same for real and simulated flows. A PIV experiment is performed with a control valve in the arterial part. In conclusion, the recirculation flow appeared in the bifurcation area and the total blood velocity changed according to the extent of valve opening.
Keywords
Flow Visualization; Particle Image Velocimetry; Arteriovenous Grafting; Blood Flow Characteristics;
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