本文選題：中空式軸流血泵　切入點：數(shù)值模擬　出處：《清華大學》2012年碩士論文

【摘要】：心室輔助裝置在心衰竭及心臟病的移植領域得到了廣泛的應用，其中，傳統(tǒng)的旋轉(zhuǎn)式軸流血泵在最近10來年里得到了快速的發(fā)展，它有如下優(yōu)點：體積小、耗能低、結構比較簡單等優(yōu)點。在人工血泵的設計中，，計算流體力學(CFD)所起的作用日益顯著。特別是根據(jù)計算結果預測血泵的流體動力特性，并分析其內(nèi)部的流場、壓力等特性，同時可以預測其溶血和凝血指標。通過軟件的數(shù)值模擬，可以大大的節(jié)省研發(fā)的費用以及時間。 近年來，在世界上，盡管傳統(tǒng)式軸流血泵受到了廣泛的重視，但是，傳統(tǒng)式軸流血泵在溶血和凝血問題上，一直未能得到很好的解決。正因為如此，作者進行了中空式軸流血泵的設計。中空式軸流血泵從根本上大大的解決了傳統(tǒng)血泵的溶血和凝血問題，同時減輕了血泵重量、簡化了血泵結構，易于植入。在本文中，作者設計了中空式軸流血泵，并構造了高質(zhì)量的六面體網(wǎng)格，通過商業(yè)軟件CFX進行了數(shù)值模擬計算，通過分析流場結構，討論了不同血泵結構對血泵的影響。 在本文中，作者針對中空式軸流血泵的問題進行了分析，并設計了幾種形式的中空式血泵，同時對轉(zhuǎn)子部分葉片進行了初步的優(yōu)化。主要完成了如下工作： 1．通過Proe，Catia等軟件完成中空式血泵的三維模型的構建，并通過ICEM生成高質(zhì)量的六面體單元網(wǎng)格。 2．利用商用CFD軟件ANSYS CFX對中空式血泵進行了數(shù)值模擬，分析了其流場結構，并以此揭示了血泵內(nèi)一系列獨特的流場特性及其與溶血、凝血的關系。 3．在小范圍內(nèi)對轉(zhuǎn)子葉片進行了優(yōu)化，并以此來指導血泵設計工作。
[Abstract]:Ventricular assistive devices have been widely used in the field of heart failure and heart disease transplantation. Among them, the traditional rotary axial bleeding pump has developed rapidly in the past 10 years. It has the following advantages: small size, low energy consumption, In the design of artificial blood pump, computational fluid dynamics (CFD) plays an increasingly important role. In particular, the hydrodynamic characteristics of blood pump are predicted based on the calculated results, and the internal flow field, pressure and other characteristics are analyzed. At the same time, the hemolysis and coagulation indexes can be predicted. Through the numerical simulation of software, the cost and time of research and development can be greatly saved. In recent years, in the world, despite the extensive attention paid to the traditional axial bleeding pump, the traditional axial bleeding pump has not been well solved in the problems of hemolysis and coagulation. The author designs the hollow axial bleeding pump. The hollow axial bleeding pump solves the hemolysis and coagulation problems of the traditional blood pump greatly, at the same time, it reduces the weight of the blood pump, simplifies the structure of the blood pump, and is easy to be implanted. The author designs a hollow axial bleeding pump and constructs a high quality hexahedron mesh. The numerical simulation is carried out by the commercial software CFX. By analyzing the flow field structure, the influence of different blood pump structures on the blood pump is discussed. In this paper, the author analyzes the problems of hollow axial blood pump, designs several kinds of hollow blood pump, and optimizes the rotor blade. The main work is as follows:. 1. The 3D model of hollow blood pump was constructed by Proeon Catia software, and the high quality hexahedron cell grid was generated by ICEM. 2. The numerical simulation of hollow blood pump is carried out by using commercial CFD software ANSYS CFX, and its flow field structure is analyzed. A series of unique flow field characteristics in the pump and their relationship with hemolysis and coagulation are revealed. 3. The rotor blade is optimized to guide the design of blood pump.
【學位授予單位】：清華大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：R318.6;O35

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相關期刊論文 前2條

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