本文關(guān)鍵詞： 斜流泵 內(nèi)部流動(dòng) 數(shù)值模擬 技術(shù)改造　出處：《西華大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：斜流泵在我國(guó)國(guó)民經(jīng)濟(jì)建設(shè)的多個(gè)領(lǐng)域中發(fā)揮著極其重要的作用,斜流泵的安全生產(chǎn)和平穩(wěn)運(yùn)行是整個(gè)生產(chǎn)流程順利進(jìn)行的重要保障。由于斜流泵結(jié)構(gòu)復(fù)雜,元件數(shù)量多,以往的研究都是單獨(dú)針對(duì)其部件進(jìn)行內(nèi)部流動(dòng)現(xiàn)象研究,隨著計(jì)算機(jī)和CFD軟件的快速發(fā)展,越來(lái)越多的研究開始著重于各個(gè)元件之間匹配之后的整體性能和相關(guān)設(shè)計(jì)研究。 本文針對(duì)某廠家的立式斜流泵性能低下(流量揚(yáng)程性能不能滿足當(dāng)時(shí)的設(shè)計(jì)要求)這一情況,采用UG建模軟件進(jìn)行其斜流泵實(shí)體建模,之后利用CFD軟件NUMECA對(duì)廠家提供的原型水泵進(jìn)行了三維流場(chǎng)的數(shù)值模擬計(jì)算,并詳細(xì)分析其內(nèi)部流動(dòng)特性,找到性能低下的原因,而后在不更改水泵導(dǎo)葉的情況下,采用模型法重新優(yōu)化設(shè)計(jì)了新的水泵葉輪,進(jìn)行了技術(shù)改造,同時(shí)對(duì)更改葉輪之后的新的斜流泵的性能進(jìn)行數(shù)值模擬,數(shù)值結(jié)果表明,葉輪更改之后的斜流泵在壓力和速度分布方面都較之前得到了優(yōu)化,且使用效率較之前也提高了約10%,性能提高比較明顯。 本文的研究工作為斜流泵等內(nèi)部流場(chǎng)的數(shù)值模擬及其性能分析具有一定的指導(dǎo)意義,所得出的結(jié)論為今后針對(duì)泵類產(chǎn)品的設(shè)計(jì)改進(jìn)和效率提升提供了一定的參考依據(jù)。
[Abstract]:Oblique flow pump plays an extremely important role in many fields of national economic construction in our country. The safe production and smooth operation of oblique flow pump is an important guarantee for the smooth progress of the whole production process. Because of the complex structure of oblique flow pump and the large number of components, With the rapid development of computer and CFD software, more and more research began to focus on the overall performance and related design research after matching each component. Aiming at the low performance of the vertical oblique flow pump (the flow head performance can not meet the design requirements at that time), the solid modeling of its oblique flow pump is carried out by UG modeling software. Then the three-dimensional flow field of the prototype pump provided by the manufacturer is simulated by CFD software NUMECA, and the internal flow characteristics of the pump are analyzed in detail to find out the cause of the low performance, and then, without changing the guide vane of the pump, the flow field of the prototype pump is simulated and calculated. The new pump impeller was redesigned by using the model method, and the technical transformation was carried out. At the same time, the performance of the new oblique flow pump after changing the impeller was numerically simulated. The numerical results show that, After the impeller change, the slant flow pump is optimized in pressure and velocity distribution, and its efficiency is increased by about 10%, and the performance is improved obviously. The research work in this paper has certain guiding significance for numerical simulation and performance analysis of internal flow field such as oblique flow pump. The conclusion can provide a certain reference for improving the design and efficiency of pump products in the future.
【學(xué)位授予單位】：西華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH38

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 李繼棟;曾永忠;劉小兵;歐順冰;;低比速水輪機(jī)轉(zhuǎn)輪副葉片對(duì)水力性能的影響[J];水電能源科學(xué);2012年06期

相關(guān)碩士學(xué)位論文 前1條

1 李繼棟;低比速水輪機(jī)轉(zhuǎn)輪短葉片對(duì)水力性能影響的研究[D];西華大學(xué);2012年

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本文編號(hào)：1496130