轴流式血泵流场CFD仿真(英文)  

Flow field CFD analysis of axial flow blood pump

作　　者：谢雄[1,2] 谭建平[1,2] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,长沙410083 [2]中南大学机电工程学院,长沙410083

出　　处：《机床与液压》2014年第6期5-10,23,共7页Machine Tool & Hydraulics

基　　金：Project sponsored by National Natural Science Foundation of China(51075403,31271057);Research Fund for the Doctoral Program of Higher Education of China(20100162110004);National Youth Natural Science Foundation of China(51105385)

摘　　要：在轴流式血泵的研发过程中,动脉局部流场中可能产生流动剪切率非常低的区域,因此有必要考虑血液的非牛顿特性。建立了轴流式血泵模型,通过CFD仿真分析得到血泵转速和流量的变化对血泵出入口压力分布和速度分布的影响,并采用水和甘油(2∶1)的混合流体替代血液,对设计的血泵进行驱动实验,测量了轴流式血泵输出流量和压力参数。结果表明:所设计的血泵在规律上和仿真是相符的。In the development of axial flow blood pump,the arterial partial flow field may produce an area with very low flow shear rate,so it is necessary to consider the non-Newtonian charac-teristics of blood fluid.In this paper,a model of axial flow blood pump was established,and flow and rotate-speed’s impacts on the inlet and outlet of the flow field in the blood pump were ana-lyzed through Computational Fluid Dynamics （CFD）simulation,as wel as the influence of the guide vane on the flow field.By the pump water experiment of the designed blood pump,its out-put flow and pressure were measured;the results show that the designed blood pump is consist-ent on the law with the simulation.

关 键 词：轴流式血泵 非牛顿流体 流场分布 CFD仿真 

分 类 号：R318.11[医药卫生—生物医学工程]