Title

Dynamic Model And Analysis Of A Centrifugal Blood Pump And Induction Motor

Abstract

A dynamic model of a centrifugal blood pump, induction motor, and channel is investigated through nonlinear analysis. A centrifugal blood pump with forward curved blades and an induction motor is subject to constant inlet and outlet mass flow conditions leading to a channel. The steady state pressure drop versus volumetric flow rate relation is described by a constitutive model containing a cubic nonlinearity obtained from centrifugal pump characteristic curves. Within certain operating regimes along the characteristic curve, the model exhibits self-excited pulsatile periodic motion and the qualitative features of the response can be understood in terms of the underlying model. Further, the mathematical model is a more general model and can be used by the designer of centrifugal blood pumps and other ventricular assist devices (VADs) to determine the instability mechanisms.

Publication Date

12-1-2001

Publication Title

American Society of Mechanical Engineers, Bioengineering Division (Publication) BED

Volume

51

Number of Pages

267-268

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

0242469150 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0242469150

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