Astract
This study presents a numerical investigation of the flow field in a screw pump designed to circulate biological fluid such as blood. A simplified channel flow model is used to allow analysis using a Cartesian set of coordinates. Finite analytic (FA) numerical simulation of the flow field inside the channel was performed to study the influence of Reynolds number and pressure gradient on velocity distribution and shear stresses across the channel cross-section. Simulation results were used to predict flow rates, circulatory flow and the shear stresses, which are known to be related to the level of red blood cell damage (hemolysis) caused by the pump. The study shows that high shear levels are confined to small regions within the channel cross-section, but the circulatory nature of the flow causes an increased percentage of blood elements to pass through the high shear regions, and increases the likelihood of cell damage.
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Mohammad Kilani: He received his M. Sc (Eng) in Mechanical Engineering in 1991 from Carnegie Mellon University in Pittsburgh, PA. He also received his Ph. D. in Mechanical Engineering from then Florida State University in Tallahassee, FL. He taught mechanical engineering in the University of Jordan, Amman, Jordan. He works on blood pump development and analysis, mechanical design, computer aided design, and micro-electro-mechanical systems (MEMS).
Yousef Haik: He is currently the Chair of the Department of Mechanical Engineering at the United Arab Emirates University. He is also a professor at the Florida State University. His research area includes application of nanomagnetics in biotechnology, MEMS and Biomagnetic Fluid Dynamics.
S-Y Jaw: He is a professor of the Systems and Naval Architecture Department of the National Taiwan Ocean University, Taiwan. He is active in such area as turbulence models, turbulence measurement technique, and color particle flow visualization.
C. J. Chen: He is the Dean of the FAMU-FSU College of Engineering. His research area includes turbulence modeling, heat transfer, CFD, Biomagnetic Fluids and micro systems.
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Kilani, M.I., Haik, Y.S., Jaw, SY. et al. Numerical simulation of flow in a screw-type blood pump. J Vis 8, 33–40 (2005). https://doi.org/10.1007/BF03181600
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DOI: https://doi.org/10.1007/BF03181600