Abstract：Objective To explore the impacts of different structures on the performance of blood pump by using the CFD multi-phase flow analysis technique. Methods The centrifugal blood pumps with two different structures were designed and introduced with Interface. Then under the same working condition, the multi-phase flow simulation on the pumps were conducted. The hydraulic performance and hemolytic properties of the blood pump were analyzed by examining the distribution of the flow field velocity vector and the shear stress cloud. Results Under the condition that Q=6.24 L/min, and the supply pressure 100 mmHg, the rotational speed of the blood pump with XZ structure was 1950 rpm, lower than that speed (2082 rpm) with L structure. The flow inside the two structures worked well. However, the highest speed inside L was 6.33 m/s, higher than that speed of XZ (5.44 m/s). The area with its shear stress larger than 150 Pa covered respectively 0.0022% and 0.206% respectively in XZ structure and L structure. Conclusion The pump with XZ structure showed better hydraulic performance and hemolytic properties. But the simple arc streamlined blades required for further improvements in deceleration and decompression.
刘晓军，杨俊培，黄碧娟，刘莉. 应用多相流技术探究离心式血泵的性能[J]. 中国医疗设备, 2015, 30(10): 28-32.
LIU Xiao-Jun, YANG Jun-Pei, HUANG Bi-Juan, LIU Li. Research on the Performance of the Centrifugal Blood Pump by Using the Multi-Phase Flow Analysis Technique. China Medical Devices, 2015, 30(10): 28-32.
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Zhang GG,Zhang MY,Yang WY,et al.Effects of non-Newtonian fluid on centrifugal blood pump performance[J].Int Commun Heat Mass,2008,35(5):613-617.
