Three-dimensional flow analysis in VFP type artificial heart by unstructured grid

Satoyuki Kawano, Takuma Kato, Kazuhiro Nakahashi, Atsushi Shirai, Toshiyuki Hayase, Tomoyuki Yambe, Shin Ichi Nitta, Hiroyuki Hashimoto

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

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 rhenlogy model of the blood flow was also studied in detail.

Original languageEnglish
Pages (from-to)229-238
Number of pages10
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume448
Issue number1
DOIs
Publication statusPublished - 2002 Oct 12
EventComputational technologies for Fluid/Thermal/Structural/Chemical Systems with Industrial Applications (2002 ASME Prssure Vessels and Piping Conference) - Vancouver, BC, Canada
Duration: 2002 Aug 52002 Aug 9

ASJC Scopus subject areas

  • Mechanical Engineering

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