Investigation of fluid dynamics within a miniature mixed flow blood pump
Investigation of fluid dynamics within a miniature mixed flow blood pump
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微型混流血泵内流体动力学的研究
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
J. Antaki
中科院分区：
文献类型：
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作者：
Zhongjun J. Wu;R. Gottlieb;G. Burgreen;John A. Holmes;D. Borzelleca;M. Kameneva;Griffith Bp;J. Antaki
摘要采用油点流动显示法和传统的光片粒子示踪法对微型混流式血泵的内部流动特性进行了研究。研究了操作条件和叶轮设计对内部流体动力学和水动力性能的影响。油点法能够分析高度缠绕的涡轮叶片通道内的分离流和扰动流--这在以前用光片法是难以察觉的。发现叶片缠绕对于在一系列非设计条件下为血液泵送提供有利的流体动力学至关重要。发现低流量操作条件对血流具有不利影响。
Abstract An oil dot flow visualization method was utilized in conjunction with a traditional light sheet particle tracer method to investigate internal flow dynamics of a miniature mixed-flow blood pump. The effects of the operating condition and impeller design on the internal fluid dynamics and hydrodynamic performance were studied. The oil dot method enabled analysis of separated and disturbed flow within the highly wrapped rotating-blade passages – previously imperceptible with light sheet methods. The blade wrap was found to be critical to providing a favorable fluid dynamics for blood pumping over a range of off-design conditions. The low flow operating conditions were found to have a detrimental effect on blood flow.