Verification of enclosed-impeller for an axial flow blood pump by using computational fluid dynamics analysis
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- Sumikura Hirohito
- Frontier Research and Development Center
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- Fukunaga Kazuyoshi
- School of Health Science,Kyorin University
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- Funakubo Akio
- School of Science and Engineering
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- Fukui Yasuhiro
- School of Science and Engineering
Bibliographic Information
- Other Title
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- 軸流血液ポンプ用エンクローズドインペラの提案とCFDを用いた工学的検証
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Abstract
The goal of our research is to develop a novel axial flow blood pump that only uses a hydrodynamic bearing to levitate the impeller. This axial flow blood pump has a unique structure; the center of the rotor was hollow and the blood passes through this hollow region(the enclosed-impeller). In this paper, an enclosed-impeller was designed for the axial flow blood pump. The velocity and pressure distributions in the enclosed-impeller were evaluated using computational fluid dynamics(CFD)analysis. A pressure head was calculated from the pressure distribution of each analysis and the values obtained were compared with the results of in-vitro experiments. We did not find any turbulence in the enclosed-impeller from the results of the velocity distribution. By comparing the pressure heads, the values obtained from the CFD analysis were found to be in good agreement with the in-vitro experimental data for rotational speeds in the range8, 000-12, 000rpm. A flow rate of5L/min for a100-mmHg-pressure head was achieved in the in-vitro experiments at a rotational speed of approximately9, 000rpm. The newly developed axial flow blood pump is expected to be used in implantable rotary blood pumps.
Journal
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- Journal of Life Support Engineering
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Journal of Life Support Engineering 20 (1), 9-16, 2008
The Society of Life Support Engineering
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Details 詳細情報について
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- CRID
- 1390001204368153984
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- NII Article ID
- 10029237389
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- NII Book ID
- AA11947931
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- ISSN
- 18845827
- 13419455
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed