本文選題：離心泵　切入點(diǎn)：固液兩相流　出處：《浙江理工大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：固液泵是輸送固液混合物的關(guān)鍵設(shè)備，在國民生產(chǎn)生活各個(gè)領(lǐng)域均有應(yīng)用，，如礦山行業(yè)的礦渣輸送，水利方面的清淤灌溉等。但是隨著固液泵的廣泛應(yīng)用，它在實(shí)際使用過程中存在的缺點(diǎn)和不足也逐漸暴露出來，如過流部件磨損嚴(yán)重及效率偏低等。同時(shí)由于兩相流動(dòng)的復(fù)雜性，關(guān)于這方面的理論研究及設(shè)計(jì)還不成熟，仍處于探索與發(fā)展階段，流道內(nèi)部許多固液兩相流動(dòng)規(guī)律還沒有被揭示出來，在工程實(shí)際中多數(shù)的設(shè)計(jì)是建立在經(jīng)驗(yàn)基礎(chǔ)之上，以至于設(shè)計(jì)出的泵性能得不到保證。因此迫切需要對泵的內(nèi)部流動(dòng)進(jìn)行深入研究，為設(shè)計(jì)出性能高和運(yùn)行穩(wěn)定的泵提供理論基礎(chǔ)。粒子圖像測速技術(shù)（particle imagevelocimetry，PIV）是一種瞬態(tài)、多點(diǎn)、無接觸式的流體力學(xué)測速方法，通過它能夠獲得平面流場的圖像，進(jìn)而獲得平面區(qū)域的速度場。目前PIV技術(shù)已成為一種有效的速度場測量方法。 本文主要對固液兩相流泵進(jìn)行數(shù)值模擬與分析，并采用PIV技術(shù)對泵內(nèi)部固液兩相流場的分布情況進(jìn)行測量。通過對泵內(nèi)部流場的PIV試驗(yàn)測試與數(shù)值模擬結(jié)果進(jìn)行對比研究，以期進(jìn)一步認(rèn)識(shí)固液泵內(nèi)部流動(dòng)的流場結(jié)構(gòu)和流動(dòng)規(guī)律，這將有助于改善泵的結(jié)構(gòu)設(shè)計(jì)，提高泵的性能。 本文的主要工作如下： 1）系統(tǒng)闡述了固液兩相流泵的研究現(xiàn)狀及PIV技術(shù)的發(fā)展?fàn)顩r。 2）利用UG造型軟件進(jìn)行離心泵實(shí)體造型，并使用Gambit進(jìn)行網(wǎng)格劃分，后利用Fluent軟件進(jìn)行清水和固液兩相流的數(shù)值模擬及結(jié)果分析。 3）完善離心泵測試試驗(yàn)臺(tái)，應(yīng)用粒子圖像測速技術(shù)（PIV）對泵在不同工況下的內(nèi)部流場進(jìn)行兩相流PIV測試試驗(yàn)，并分析流場內(nèi)固相顆粒的速度變化規(guī)律和運(yùn)動(dòng)特性。 4）將數(shù)值模擬結(jié)果與PIV試驗(yàn)結(jié)果進(jìn)行綜合對比分析，從而互相驗(yàn)證了數(shù)值方法和試驗(yàn)方法的可靠性，取得了有參考意義的試驗(yàn)數(shù)據(jù)和結(jié)果，為后續(xù)的固液泵的進(jìn)一步研究積累了基礎(chǔ)。
[Abstract]:Solid-liquid pump is the key equipment for conveying solid-liquid mixture. It has been used in various fields of national production and life, such as slag transportation in mining industry, desilting irrigation in water conservancy and so on. But with the wide application of solid-liquid pump, The shortcomings and shortcomings in the process of practical application have been gradually exposed, such as serious wear of overcurrent parts and low efficiency, etc. At the same time, due to the complexity of two-phase flow, the theoretical research and design of this aspect are not mature. Still in the stage of exploration and development, many solid-liquid two-phase flow patterns in the channel have not been revealed. In engineering practice, most of the designs are based on experience. Therefore, it is urgent to study the internal flow of the pump in order to provide a theoretical basis for designing a pump with high performance and stable operation. Particle image velocimetric PIV is a transient and multipoint technique. The contactless hydrodynamic velocimetry method can obtain the image of the plane flow field and then obtain the velocity field in the plane region. At present, the PIV technique has become an effective method for measuring the velocity field. In this paper, the numerical simulation and analysis of the solid-liquid two-phase flow pump are carried out, and the distribution of the solid-liquid two-phase flow field in the pump is measured by PIV technique. The results of PIV test and numerical simulation of the flow field inside the pump are compared and studied. In order to further understand the flow field structure and flow law of the solid liquid pump, this will help to improve the pump structure design and improve the pump performance. The main work of this paper is as follows:. 1) the research status of solid-liquid two-phase flow pump and the development of PIV technology are systematically described. 2) the solid modeling of centrifugal pump is carried out by UG software, the mesh is divided by Gambit, and the numerical simulation and result analysis of clean water and solid-liquid two-phase flow are carried out by using Fluent software. 3) improve the test rig of centrifugal pump, using particle image velocimetry (PIV) to test the internal flow field of the pump under different working conditions by PIV, and analyze the velocity variation law and motion characteristics of solid particles in the flow field. 4) the numerical simulation results are compared with the PIV test results, and the reliability of the numerical method and the test method are verified, and the reference data and results are obtained. It provides a basis for further study of solid-liquid pumps.
【學(xué)位授予單位】：浙江理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH311

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 羅瑋;周孝德;程文;劉曉輝;;PIV應(yīng)用于氣液兩相流的研究現(xiàn)狀[J];傳感器與微系統(tǒng);2006年02期

2 周云龍,孫斌,段曉寧,洪文鵬,張玲;復(fù)合管道內(nèi)液-固兩相流漿體水擊壓強(qiáng)計(jì)算[J];工程熱物理學(xué)報(bào);2004年02期

3 朱玉才,吳玉林,曲衍國,于京諾,王亮申;離心泵葉片壓力面固液兩相流的邊界層分析[J];工程熱物理學(xué)報(bào);2005年03期

4 趙鎮(zhèn)南,郝睿,王利;固液兩相流中微對流強(qiáng)化的機(jī)理分析與數(shù)值模擬[J];工程熱物理學(xué)報(bào);2005年04期

5 謝軍龍;游斌;吳克啟;;前緣彎掠風(fēng)扇葉尖渦的數(shù)值分析與PIV實(shí)驗(yàn)[J];工程熱物理學(xué)報(bào);2006年01期

6 李金偉;劉樹紅;楊帆;吳玉林;;微小型粘性泵的內(nèi)部流場PIV試驗(yàn)研究[J];工程熱物理學(xué)報(bào);2007年01期

7 袁輝靖;邵杰;劉樹紅;吳玉林;;小流量工況下微小型泵內(nèi)部流場數(shù)值模擬及LIF-PIV實(shí)驗(yàn)研究[J];工程熱物理學(xué)報(bào);2008年11期

8 高波;楊敏官;;旋流泵內(nèi)顆粒分布及對鹽析特性的影響[J];工程熱物理學(xué)報(bào);2009年12期

9 邵春雷;顧伯勤;黃星路;周劍鋒;;低比轉(zhuǎn)速泵葉輪流道內(nèi)部流動(dòng)的PIV試驗(yàn)[J];航空動(dòng)力學(xué)報(bào);2010年09期

10 徐玉明;遲衛(wèi);莫立新;;PIV測試技術(shù)及其應(yīng)用[J];艦船科學(xué)技術(shù);2007年03期

相關(guān)博士學(xué)位論文 前2條

1 袁建平;離心泵多設(shè)計(jì)方案下內(nèi)流PIV測試及其非定常全流場數(shù)值模擬[D];江蘇大學(xué);2008年

2 張靜;雙流道式污水泵葉輪三維設(shè)計(jì)及水力模型開發(fā)研究[D];蘭州理工大學(xué);2008年

相關(guān)碩士學(xué)位論文 前2條

1 楊華;離心泵內(nèi)部流場PIV實(shí)驗(yàn)研究[D];揚(yáng)州大學(xué);2001年

2 譚東華;水下運(yùn)行環(huán)境的固液兩相雙流道泵的設(shè)計(jì)與試驗(yàn)研究[D];浙江大學(xué);2006年

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