To effectively design the vibrating flow pump (VFP) for left ventricular assist device, the numerical codes were developed for three-dimensional blood flow based on the finite volume method. The numerical codes were also developed based on the artificial compressibility method by the use of unstructured grid. Three-dimensional numerical computations and the visualizations were made for flow patterns in the casing of VFP, which were closely connected with hemolysis and blood coagulation. We examined the three different inlet conditions, i.e., radial flow, flow considering the 2nd vibration mode of the jellyfish valve motion, and the swirling flow, to explore the suitable condition for preventing the hemolysis and the blood coagulation. It was found that the swirling flow could effectively decrease hemolysis. The effect of rheology model of the blood flow was also studied in detail.
- Pressure Vessels and Piping Division
Three-Dimensional Flow Analysis in VFP Type Artificial Heart by Unstructured Grid
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Kawano, S, Kato, T, Nakahashi, K, Shirai, A, Hayase, T, Yambe, T, Nitta, S, & Hashimoto, H. "Three-Dimensional Flow Analysis in VFP Type Artificial Heart by Unstructured Grid." Proceedings of the ASME 2002 Pressure Vessels and Piping Conference. Computational Technologies for Fluid/Thermal/Structural/Chemical Systems With Industrial Applications, Volume 1. Vancouver, BC, Canada. August 5–9, 2002. pp. 229-238. ASME. https://doi.org/10.1115/PVP2002-1556
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