Divison of Thermal and Fluids Engineering, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore.
ASAIO J. 2010 Jan-Feb;56(1):24-9. doi: 10.1097/MAT.0b013e3181c8f066.
Computational fluid dynamic simulations of the Kyoto-NTN magnetically suspended centrifugal blood pump with 16 forward-bending blades (16FB), 16 straight blades (16SB), and eight backward-bending blades (8BB) impellers were performed in this study. Commercial CFD software package FLUENT were used as the solver. The purpose of this study is to find out how the impeller blade profiles affect the inner flow and the performance of the centrifugal blood pump. The simulations were carried out with the same impeller rotating speed of 2,000 rpm and pump flow rate of 5 L/min to compare the three pump models. It was found that the 16SB impeller can produce higher pressure head than the 16FB and 8BB impellers under the same impeller rotating speed and pump flow rate. The flow particle tracing was carried out to estimate the blood damage level caused by the three different impeller profiles. It was found that the 16FB and 8BB models have caused the highest and lowest blood damage, respectively. The 16SB is recommended among the three pumps because it can generate the highest pressure head and induce mild blood damage index, although it was higher than that of the 8BB model.
本研究对京都-NTN 磁悬浮离心血泵的 16 个前弯叶片（16FB）、16 个直叶片（16SB）和 8 个后弯叶片（8BB）叶轮进行了计算流体动力学模拟。商用 CFD 软件包 FLUENT 被用作求解器。本研究的目的是找出叶轮叶片形状如何影响离心泵的内部流动和性能。在相同的叶轮转速为 2000rpm 和泵流量为 5L/min 的条件下，对三种泵模型进行了模拟比较。结果发现，在相同的叶轮转速和泵流量下，16SB 叶轮比 16FB 和 8BB 叶轮能产生更高的压力头。进行了流体质点跟踪以估计三种不同叶轮形状引起的血液损伤程度。结果发现，16FB 和 8BB 模型分别引起了最高和最低的血液损伤。在这三种泵中，推荐使用 16SB，因为它可以产生最高的压力头，并诱导出温和的血液损伤指数，尽管它高于 8BB 模型。
