中文摘要：

血泵的溶血程度主要受血液的运动流场影响,所以研究血液在血泵内腔的螺旋流动特性对于螺旋叶片血泵的设计和研究工作具有十分重要的意义.本文将血液流变理论和传统的力学分析方法相结合,对血液在低、高剪切变率两种条件下的环形空间螺旋流动性能进行了研究,给出了速度表达式,分析了各参数对流动性能的影响,同时还对高速螺旋流场中红细胞的力学行为进行了分析.结果 表明,高速螺旋流场中的血液流动情况十分复杂,在进行高速螺旋血泵设计时,应综合考虑血液在不同剪切变率条件下的流动性能及红细胞的力学行为.

英文摘要：

The hemolysis of a blood pump depends on the flow field, so that investigating the spiral flow performance of human blood in the inner of blood pump is very important for designing and studying the spiral pump. By combining the hemorheology theory and traditional mechanical analysis method, the characteristics of spiral flow blood in annular space both at low and high shear rates were studied, and the expresses of velocities were presented. The influences of several parameters on the flow performance were also analyzed. Furthermore, the mechanical behavior of red blood cells in high speed spiral flow field was investigated. The results indicate that the blood flow situation in high-speed spiral flow field was very complicated. During designing the high-speed spiral blood pump, the blood flow performances in different shear rates and the mechanical behaviors of red blood cells should be considered.