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Computational Fluid Dynamics Analysis of a Centrifugal Blood Pump with Washout Holes
Author(s) -
Tsukamoto Yuki,
Ito Kazuyuki,
Sawairi Toshio,
Konishi Yoshiaki,
Yamane Takashi,
Nishida Masahiro,
Masuzawa Toru,
Tsukiya Tomonori,
Endo Seiko,
Taenaka Yoshiyuki
Publication year - 2000
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.1525-1594.2000.06604.x
Subject(s) - impeller , computational fluid dynamics , washout , flow visualization , fluid dynamics , mechanics , centrifugal pump , casing , flow (mathematics) , physics , mechanical engineering , engineering , meteorology
The authors studied avoidance of coagulation occurrence using computational fluid dynamics (CFD) analysis from the fluid dynamical point of view. Concerning centrifugal pumps, blood coagulation sometimes occurs at the region behind the impeller where the flow is generally stagnant. Therefore, we conducted a thorough study with the specimen pump with and without washout holes, mocking up the Nikkiso HPM‐15. As the result, the model with washout holes indicated that the fluid rotates rapidly at the vicinity of the shaft and generates washout effects near the stationary rear casing. On the other hand, the model without washout holes showed that fluid cannot be quickly shipped out of the area behind the impeller and rotates mildly around the shaft. To clarify the moving relations between the impeller and the fluid, validation studies by comparing the results of CFD analysis and flow visualization experiments are ongoing; thus far, the studies show that CFD results are similar to the results from flow visualization experiments.