• Department of Cardiovascular and Thoracic Surgery, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, P.R.China;
CAIJi-ming, Email: rosemarycjm@163.com
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Objective  To optimize the hemodynamics of a disk blood pump in children. Method  We used the computational fluid dynamics technology to simulate the flow in a pediatric blood pump numerically, and finally analyzed the results for deep study about the thrombosis and hemolysis produced in it, to improve the design according to the results of the flow field analysis. Results  We calculated results between the flow rate and the pressure elevation at different rotational speed: 2 500 rpm, 3 000 rpm, and 4 000 rpm, respectively. Under each rotational speed, it was selected five different discharge outlet boundary conditions. The simulation results conformed to the experimental data. The increased pressure of the blood pump was effective. But the phenomenon of flow separation was increased the at blade surface in the low speed region. The maximum wall shear stress was maintained within 100 Pa. Conclusion  The design of disc blood pump has a good fluid dynamic performance. And the flow line is fluent, the probability of thrombosis and hemolysis occurred is in the range of control. But the phenomenon of flow separation is appeared. There is a room to improve.

Citation: HANLu, WANGWei, LIUJin-long, YUXiao-qing, CAIJi-ming. Computational Evaluation of the Fluid Dynamics of a Disk Blood Pump. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2016, 23(4): 380-385. doi: 10.7507/1007-4848.20160088 Copy

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