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KMID : 1000620030010020030
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International Journal of Vascular Biomedical Engineering
2003 Volume.1 No. 2 p.30 ~ p.35
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Micro-PIV Measurements of In Vitro Blood Flow in a Micro-Channel
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Park Cheol-Woo
Shin Se-Hyun
Lee Sang-Joon
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Abstract
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Flow characteristics of blood flow in a micro channel were investigated experimentally using a micro-PIV (Particle Image Velocimetry) velocity field measurement technique. The main objective of this study was to understand the real blood flow in micron-sized blood vessels. The Reynolds number based on the hydraulic diameter of micro-channel for deionized (DI) water was about Re=0.34. For each experimental condition, 100 instantaneous velocity fields were captured and ensemble-averaged to get the spatial distributions of mean velocity. In addition, the motion of RBC (Red Blood Cell) was visualized with a high-speed CCD camera. The captured flow images of nano-scale fluorescent tracer particles in DI water were clear and gave good velocity tracking-ability. However, there were substantial velocity variations in the central region of real blood flow in a micro-channel due to the presence of red blood cells.
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KEYWORD
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PIV, Micro-Channel, Blood Flow, Red Blood Cell (RBC)
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