摘要
目的探讨计算流体动力学(CFD)方法在人工心脏设计中的应用。方法应用CFD Fluent 6.1软件模拟不同状态下自制螺旋和轴流2种叶轮血泵泵腔、出入流口的流场状态,内部流场采用三维彩图显示。结果得到2种血泵在不同转速下压力流量情况和内部流场及剪切应力分布状态。结论模拟计算结果与体外实验结果对照显示CFD分析结果很好地提示血泵实际工作状态。CFD方法可以有效地提示设计血泵的血液相容性能,是血泵研制的可靠手段。
Objective To study the application of computational fluid dynamics （CFD） in designing of artificial heart. Methods The fluid dynamics in an axial flow pump and a volute flow pump was analyzed three-dimensional by using CFD Fluent 6.1 software. Results The pressure-flow curves,hydraulic efficiencies and scalar fluid stress levels of the blood pumps were calculated by CFD modeling. Conclusion It is demonstrated that there is positive correlation between computed pressure-flow characteristics and in vitro experimental results. The CFD analysis enables the engineers to predict hemolysis on a computer. Thus the CFD is a useful tool for developing blood pumps.
出处
《生物医学工程与临床》
CAS
2008年第6期439-442,共4页
Biomedical Engineering and Clinical Medicine
基金
国家高技术研究发展计划(863计划)(2006AAO2Z4E8)
北京市青年科研资助项目(QN2008-002)
关键词
计算流体动力学
血泵
血液相溶性
人工心脏
流场
computational fluid dynamics
blood pump
blood compatibility
artificial heart
flow pattern
