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Computational Fluid Dynamics Analysis to Establish the Design Process of a Centrifugal Blood Pump: Second Report
Author(s) -
Miyazoe Yuki,
Sawairi Toshio,
Ito Kazuyuki,
Konishi Yoshiaki,
Yamane Takashi,
Nishida Masahiro,
Asztalos Balazs,
Masuzawa Toru,
Tsukiya Tomonori,
Endo Seiko,
Taenaka Yoshiyuki
Publication year - 1999
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1046/j.1525-1594.1999.06418.x
Subject(s) - impeller , computational fluid dynamics , centrifugal pump , flow visualization , diffuser (optics) , hemolysis , mechanics , fluid dynamics , shear stress , mechanical engineering , engineering , flow (mathematics) , materials science , physics , medicine , light source , optics , immunology
To establish an efficient design process for centrifugal blood pumps, the results of computational fluid dynamics (CFD) analysis were compared to the results of flow visualization tests and hemolysis tests, using the Nikkiso centrifugal blood pump. CFD analysis revealed that the radial gap greatly affected the shear stress in the outlet diffuser. The hemolysis study also indicated a similar tendency. To see the flow behind the impeller, we conducted a comparative study between models with and without washout holes using the CFD technique. CFD analysis indicated that flow and pressure distributions behind the impeller were different between both models, and a particle was observed to remain longer behind the impeller in the model without washout holes. In the future, CFD analysis could be a useful tool for developing blood pumps in comparison to flow visualization tests and hemolysis tests.