| 某轴流式血液泵的实验与改进设计 |
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| 引用本文： | 展昭,张岩,桂幸民.某轴流式血液泵的实验与改进设计[J].航空动力学报,2008,23(6):1061-1066. |
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| 作者姓名： | 展昭 张岩 桂幸民 |
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| 作者单位： | 1. 北京航空航天大学,能源与动力工程学院,北京 100083
2. 中国协和医科大学阜外医院,心脏外科,北京 100037 |
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| 基金项目： | 国家自然科学基金
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国家高技术研究发展计划(863计划)
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北京市优势专科疾病防治研究基金 |
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| 摘 要： | 原型血液泵LAP-00的数值模拟及实验结果表明,在设计转速9 000 r/min下,最大效率点对应的设计点流量为11 L/min,远大于临床所需3~8 L/min的流量,致使血液泵在实际应用时效率偏低;而静子区域存在的流动分离与回流,极易造成血流停滞进而引发血栓.改进后的血液泵LAP-23,将设计转速从9 000r/min降低至8 000 r/min,减小了转子叶尖切应力对血细胞的破坏;设计点流量降低至6 L/min,并消除了静子区域内的分离和回流.
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| 关 键 词： | 血液泵 轴流 数值计算 溶血 血栓 |
| 收稿时间： | 2007/5/24 0:00:00 |
| 修稿时间： | 2007/6/25 0:00:00 |
Experiment and design improvement of an axial flow blood pump |
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| ZHAN Zhao,ZHANG Yan and GUI Xing-min.Experiment and design improvement of an axial flow blood pump[J].Journal of Aerospace Power,2008,23(6):1061-1066. |
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| Authors: | ZHAN Zhao ZHANG Yan and GUI Xing-min |
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| Institution: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;Department of Cardiac Surgery, Fuwai Hospital, Peking Union Medical College, Beijing 100037, China;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | The numerical investigation and experimental results of the proto-pump LAP-00 show that at design rotational speed of 9 000 r/min,the flow rate corresponding to the highest efficiency point is 11 L/min,which is much higher than clinical use(3~8 L/min),causing the pump to work at off design point in clinic use with a low efficiency.Besides,in the diffuser region,flow separation and recirculation may cause blood stagnation and thrombosis.The improved design for pump LAP-23 decreases the design rotational speed from 9000 r/min to 8000 r/min,thus reduces the high shear stress on blood cells at impeller tip;meanwhile,it decreases the design flow rate to 6 L/min and eliminates flow separation and recirculation in the diffuser region. |
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| Keywords: | blood pump axial flow numerical simulation hemolysis thrombosis |
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