雙泵式人工心臟流場特性分析與設計

Investigation of the flowfield and Design for a BiVOCOR Artificial Heart

劉耿任(Geng-Ren Liu)

指導教授 ： 戴昌賢

國立屏東科技大學/工學院/車輛工程系所/碩士(2013年)

https://doi.org/10.6346/NPUST.2013.00295

摘要

本研究以計算流體力學方法探討BiVACOR™公司生產之雙泵式人工心臟流場特性，數值方法以不可壓縮流COUPLE算則為主，搭配Realizable k-ε紊流模式。測試參數為2種模型各搭配3組入口流量及5組泵轉速。研究發現高轉速的磁浮葉輪配置低入口流量可產生較高之壓力差，低轉速的磁浮葉輪配置高入口流量則結果反之；另因入口流量與泵之轉速匹配性亦造成高剪應力區分佈不同，相關結果可供工程設計上參考。

關鍵字

雙泵式人工心臟 ； COUPLE算則 ； 流量 ； 轉速 ； 剪應力

並列摘要

In this study, CFD Method is applied to study the flow characteristic of a BiVACOR Artificial Heart. The incompressible flow COUPLE scheme with realizable k-ε turbulence model is using to investigate the impeller of the artificial heart at different speeds and with different inlet flow rate. The test parameters are the three sets of an inlet flow, and 5 sets pump speed. The results found the suspended impeller with high rpm and low inlet flow can produce higher pressure differential. On the other hand, the suspended impeller with low rpm and high inlet flow results contrary. Moreover, the match by the pump rpm and inlet flow also affect the high shear stress distribution.

並列關鍵字

BiVACOR artificial heart ； COUPLE scheme ； flow rate ； rpm ； shear stress

參考文獻

[42]王怡昌，2011，「中小型垂直軸風力發電機之氣動噪音分析」，國立中央大學機械工程學系碩士論文。

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