Particle image velocimetry measurements of blood velocity in a continuous flow ventricular assist device

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dc.contributor.author Day, Steven
dc.contributor.author McDaniel, James
dc.contributor.author Wood, Houston
dc.contributor.author Allaire, Paul
dc.contributor.author Landrot, Nicolas
dc.contributor.author Curtas, Anthony
dc.date.accessioned 2009-03-17T16:22:41Z
dc.date.available 2009-03-17T16:22:41Z
dc.date.issued 2001
dc.identifier.uri http://hdl.handle.net/1850/8587
dc.description ASAIO Journal article. Please see www.asaio.com for more information. en_US
dc.description.abstract The third prototype of a continuous flow ventricular assist device (CFVAD3) is being developed and tested for implantation in humans. The blood in the pump flows through a fully shrouded four-bladed impeller (supported by magnetic bearings) and through small clearance regions on either side of the impeller. Measurements of velocities using particle image velocimetry of a fluid with the same viscosity as blood have been made in one of these clearance regions. Particle image velocimetry is a technique that measures the instantaneous' velocity field within an illuminated plane of the fluid field by scattering light from particles added to the fluid. These measurements have been used to improve understanding of the fluid dynamics within these critical regions, which are possible locations of both high shear and stagnation, both of which are to be avoided in a blood pump. Computational models of the pump exist and these models are currently being used to aid in the design of future prototypes. Among other things, these models are used to predict the potential for hemolysis and thrombosis. Measurements of steady flow at two operating speeds and flow rates are presented. The measurements are compared with the computed solutions to validate and refine, where necessary, the existing computational. models. en_US
dc.language.iso en_US en_US
dc.publisher ASAIO Journal en_US
dc.subject Blood pump en_US
dc.subject CFVADA3 en_US
dc.subject Particle image velocimetry en_US
dc.subject Velocimetry en_US
dc.title Particle image velocimetry measurements of blood velocity in a continuous flow ventricular assist device en_US
dc.type Article en_US

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