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Investigation of the washout effect in a magnetically driven axial blood pump

Triep, M., Brücker, C., Kerkhoffs, W., Schumacher, O. and Marseille, O. (2008). Investigation of the washout effect in a magnetically driven axial blood pump. Artificial Organs, 32(10), pp. 778-784. doi: 10.1111/j.1525-1594.2008.00630.x

Abstract

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.

Publication Type: Article
Additional Information: This is the peer reviewed version of the following article: Triep, M., Brücker, C., Kerkhoffs, W., Schumacher, O. and Marseille, O. (2008), Investigation of the Washout Effect in a Magnetically Driven Axial Blood Pump. Artificial Organs, 32: 778–784. , which has been published in final form at http://dx.doi.org/10.1111/j.1525-1594.2008.00630.x. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Publisher Keywords: Axial blood pump; Sealless; Magnet drive; Computational fluid dynamics; Digital particle image velocimetry; Washout flow
Subjects: R Medicine > R Medicine (General)
T Technology > TA Engineering (General). Civil engineering (General)
Departments: School of Mathematics, Computer Science & Engineering > Engineering
School of Mathematics, Computer Science & Engineering > Engineering > Mechanical Engineering & Aeronautics
URI: http://openaccess.city.ac.uk/id/eprint/12960
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