关键词: 磁悬浮, 血泵, 轴流式, 数值模拟, 溶血预测

Abstract:

Blood pump impeller causes varying degrees of mechanical damage of blood cells when rotating, which will lead to hemolysis and thrombosis, even threat patient life. For an axial flow maglev blood pump, based on CFD and structural optimization design, using κ-ε model, dynamic mesh and user defined function(UDF), a three-dimensional numerical simulation of axial flow maglev blood pump was carried on, hemolytic mathematical model was established, the flow shear stress distribution of axial flow maglev blood pump was obtained, the relationship between blood flow and impeller speed was explored, blood cell flow path was gotten based on particle tracking method and also do hemolysis prediction. This analysis provides an important basis for structure design and hemolysis reduce of axial flow maglev blood pump.

Key words: maglev, blood pump, axial flow, numerical simulation, hemolysis prediction