Gap velocity measurements of a blood pump model.
Gap velocity measurements of a blood pump model.
复制标题
血泵模型的间隙速度测量。
DOI：
10.1046/j.1525-1594.2002.06925.x
复制
发表时间：
2002
影响因子：
2.4
通讯作者：
Y. Wong
中科院分区：
文献类型：
--
作者：
L. Chua;K. Ong;Ching Man Simon Yu;W. Chan;Y. Wong
本文介绍了一台5：1放大离心血泵模型在工作状态下叶轮与泵壳之间差距内的速度测量结果。测量了差距处的径向和切向速度。结果发现，有没有交叉流的径向和切向速度分布在七个径向位置。这意味着原型中的0.2 mm间隙应该是泵的最佳间隙。合成速度的矢量图表明，泵的双蜗壳设计，特别是在θ = 180度处开始的分流板，在间隙中产生了冲刷机制;即，从θ = 100度到θ的流动扇区。= 190度的气流强烈地指向眼睛，而差距中的其余气流沿切向方向。重要的是，血液应当通过眼睛流出差距，而不是继续在间隙中循环。这解释了为什么与其他离心泵相比，该泵具有最小的溶血和血栓形成，并且能够以标称效率运行。
This paper presents the velocity measurements in the gap between the impeller and the pump casing of a 5:1 enlarged centrifugal blood pump model at operating condition. Both the radial and tangential velocity at the gap were measured. It was found that there was no cross flow in both the radial and tangential velocity distributions at the seven radial locations. This implies that the 0.2 mm gap in the prototype should be the optimal clearance of the pump. The vector plot of the resultant velocity showed that the double volute design of the pump, especially the splitter plate that started at theta; = 180 degrees, has created a washout mechanism in the clearance gap; that is, a sector of flow ranging from theta; = 100 degrees to theta; = 190 degrees has directed strongly toward the eye while the rest of the flow in the gap is in a tangential direction. It is important that the blood should flow out of the gap through the eye instead of continuing to circulate in the clearance gap. This explains why the pump has minimum hemolysis and thrombus formation and is able to function with nominal efficiency as compared to other centrifugal pumps.
影响因子：
2.4
作者：
T. Akamatsu;T. Nakazeki;Hiroyoshi Itoh
通讯作者：
T. Akamatsu;T. Nakazeki;Hiroyoshi Itoh