Effect of the rheological properties of the blood and the surface roughness of the mechanical seals for rotary blood pumps

阐明了红细胞固定化对血液流变学特性和溶血特性的影响。用电导仪和离子色谱法研究了血液机械密封的密封性能。提出了一种预测平行密封面机械密封润滑特性的平均流动模型。该模型考虑了机械密封相似工况下的二维流动，确定了流动因素。定义了由表面粗糙度产生的预期动水压力的修正系数。结果表明，该模型可以有效地分析具有平行密封面的机械密封的润滑特性。

The effect of the immobilization of red blood cells on rheological properties and hemolytic characteristics was clarified.Sealing properties of a mechanical seal for blood using an electrical conduction meter and an ion chromatography were clarified.An average flow model to predict the lubrication characteristics of mechanical seals with parallel sealing faces is proposed. The present model determines the flow factors considering the two-dimensional flow under the similar operating conditions of mechanical seals. The correction factor for the expected hydrodynamic pressure generated by the surface roughness is also defined. The results are compared with those based on the Patirs average flow model and show that the present model can be effective for the analysis of the lubrication characteristics of mechanical seals with parallel sealing faces.