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Investigation of the Washout Effect in a Magnetically Driven Axial Blood Pump
Author(s) -
Triep Michael,
Brücker Christoph,
Kerkhoffs Wolfgang,
Schumacher Oliver,
Marseille Oliver
Publication year - 2008
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 - 10.1111/j.1525-1594.2008.00630.x
Subject(s) - impeller , washout , axle , casing , mechanics , particle image velocimetry , computational fluid dynamics , volute , flow (mathematics) , axial compressor , physics , materials science , mechanical engineering , gas compressor , engineering , turbulence , meteorology
For a long‐term implementation of the magnetically driven CircuLite blood pump system, it is extremely important to be able to ensure a minimum washout flow in order to avoid dangerous stagnation regions in the gap between the impeller and the motor casing as well as near the pivot–axle area at the holes in the impeller's hub. In general, stagnation zones are prone to thrombus formation. Here, the optimal impeller/motor gap width will be determined and the washout flow for different working conditions will be quantitatively calculated. The driving force for this secondary flow is mainly the strong pressure difference between both ends of the gap. Computational fluid dynamics (CFD) and digital particle image velocimetry (DPIV) will be used for this analysis.