本文選題：中空式軸流血泵　切入點(diǎn)：數(shù)值模擬　出處：《清華大學(xué)》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(lǐng)域得到了廣泛的應(yīng)用，其中，傳統(tǒng)的旋轉(zhuǎn)式軸流血泵在最近10來(lái)年里得到了快速的發(fā)展，它有如下優(yōu)點(diǎn)：體積小、耗能低、結(jié)構(gòu)比較簡(jiǎn)單等優(yōu)點(diǎn)。在人工血泵的設(shè)計(jì)中，，計(jì)算流體力學(xué)(CFD)所起的作用日益顯著。特別是根據(jù)計(jì)算結(jié)果預(yù)測(cè)血泵的流體動(dòng)力特性，并分析其內(nèi)部的流場(chǎng)、壓力等特性，同時(shí)可以預(yù)測(cè)其溶血和凝血指標(biāo)。通過(guò)軟件的數(shù)值模擬，可以大大的節(jié)省研發(fā)的費(fèi)用以及時(shí)間。 近年來(lái)，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(wèn)題上，一直未能得到很好的解決。正因?yàn)槿绱�，作者進(jìn)行了中空式軸流血泵的設(shè)計(jì)。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(wèn)題，同時(shí)減輕了血泵重量、簡(jiǎn)化了血泵結(jié)構(gòu)，易于植入。在本文中，作者設(shè)計(jì)了中空式軸流血泵，并構(gòu)造了高質(zhì)量的六面體網(wǎng)格，通過(guò)商業(yè)軟件CFX進(jìn)行了數(shù)值模擬計(jì)算，通過(guò)分析流場(chǎng)結(jié)構(gòu)，討論了不同血泵結(jié)構(gòu)對(duì)血泵的影響。 在本文中，作者針對(duì)中空式軸流血泵的問(wèn)題進(jìn)行了分析，并設(shè)計(jì)了幾種形式的中空式血泵，同時(shí)對(duì)轉(zhuǎn)子部分葉片進(jìn)行了初步的優(yōu)化。主要完成了如下工作： 1．通過(guò)Proe，Catia等軟件完成中空式血泵的三維模型的構(gòu)建，并通過(guò)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(duì)中空式血泵進(jìn)行了數(shù)值模擬，分析了其流場(chǎng)結(jié)構(gòu)，并以此揭示了血泵內(nèi)一系列獨(dú)特的流場(chǎng)特性及其與溶血、凝血的關(guān)系。 3．在小范圍內(nèi)對(duì)轉(zhuǎn)子葉片進(jìn)行了優(yōu)化，并以此來(lái)指導(dǎo)血泵設(shè)計(jì)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(xué)位授予單位】：清華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：R318.6;O35

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

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2 趙春章,張錫文,白凈;可植入式微型軸流血泵流場(chǎng)的數(shù)值模擬[J];機(jī)械工程學(xué)報(bào);2005年07期

本文編號(hào)：1653513