Abstract
In recently, PCPS and/or ECMO were got an opportunity to use in the field of critical care. But, these devices were so large to carry by hands and difficult to maneuver inexperienced worker. To solve the problems, we are developing a portable PCPS, called the Emergency Life Support System(ELSS). And the sequential flow pump (SFP) was designed for the build-in blood pump of the ELSS.
In this study, the optimal number of vanes for impeller in SFP was examined in two conditions using the computational fluid dynamics (CFD) analysis.First, the number of vanes was changed 6, 8 and 10 with constant vane pass volume. Second, the number of vanes was changed from 6 to 30 with constant priming volume in the impellers.
As results from CFD, in the first condition, the head pressure increased from 372mmHg to 408mmHg in proportion to the number of vanes. In the second condition, the peek head pressure was achieved in 12 vanes.
