Computational Fluid Dynamics Models of Ventricular Assist Devices

May‐Newman, Karen

doi:10.1007/978-1-4419-0730-1_18

Cited by 1 publication

(1 citation statement)

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“…CFD analysis has been adopted in heart pump research as a cost-effective tool for design optimization of heart pump (May-Newman [5]), Furthermore, CFD is also being used to evaluate and predict damage to blood(Song, Throckmorton [6, Song, Throckmorton [7]). …”

Section: Introductionmentioning

confidence: 99%

Flow Evaluation and Hemolysis Analysis of BVAD Centrifugal Blood Pump by Computational Fluids Dynamics

Bumrungpetch¹,

Tan²,

Liu³

et al. 2014

International Journal of Fluid Machinery and Systems

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Computational fluid dynamics (CFD) and particle image velocimetry (PIV) are commonly used techniques to evaluate the flow characteristics in the development stage of blood pumps. CFD technique allows rapid change to pump parameters to optimize the pump performance without having to construct a costly prototype model. These techniques are used in the construction of a bi-ventricular assist device (BVAD) which combines the functions of LVAD and RVAD in a compact unit. The BVAD construction consists of two separate chambers with similar impellers, volutes, inlet and output sections. To achieve the required flow characteristics of an average flow rate of 5 l/min and different pressure heads (left -100mmHg and right -20mmHg), the impellers were set at different rotating speeds. From the CFD results, a six-blade impeller design was adopted for the development of the BVAD. It was also observed that the fluid can flow smoothly through the pump with minimum shear stress and area of stagnation which are related to haemolysis and thrombosis. Based on the compatible Reynolds number the flow through the model was calculated for the left and the right pumps. As it was not possible to have both the left and right chambers in the experimental model, the left and right pumps were tested separately.

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Section: Introductionmentioning

confidence: 99%