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[Research on flow characteristics in a non-blade centrifugal blood pump based on CFD technology]
Yunzhang Cheng1, Binhai Luo, Wenquan Wu
1University of Shanghai for Science and Technology, Shanghai 200093, China. y_z_cheng@yahoo.com.cn
Abstract:
The problem of thrombus and hemolysis in blood pump has always been an important topic to study in the development of the blood pump. Numbers of research results show that it is the complicated flow and the high shear stress of the mechanical movement that result in the thrombus and hemolysis. In this study, with the cooperation of Shanghai Children's Medical Center, we have used computational fluid dynamics (CFD) commercial software FLUENT to compute and analyze the flow characteristics in a non-blade centrifugal blood pump. The results figure out that this pump has a reasonable flow distribution and the shear stress distribution is under the critical broken state of red blood cell; meanwhile, there is less thrombus and hemolysis in this pump. So it is in the foreground for clinical use.
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