本文選題：雙吸式葉輪 + 參數(shù)化�。� 參考：《湘潭大學(xué)》2013年碩士論文

【摘要】：葉輪是離心泵的關(guān)鍵部件，其設(shè)計速度和水力學(xué)性能直接影響到產(chǎn)品的開發(fā)周期和競爭力。為節(jié)省離心泵葉輪水力學(xué)性能的驗證以及優(yōu)化的成本，，本文采用參數(shù)化建模手段大幅度降低模型建立的時間，利用FLUENT軟件對離心泵葉輪內(nèi)部流場進行仿真分析以節(jié)省試驗成本。 本論文以雙吸型離心泵葉輪為基礎(chǔ)，在詳細了解國內(nèi)外葉輪CAD技術(shù)的前提下，針對目前雙吸型葉輪的不足之處，采用參數(shù)化建模技術(shù)，在SolidWorks這一軟件平臺上，開發(fā)出雙吸型離心泵參數(shù)化設(shè)計軟件，為后續(xù)葉輪內(nèi)部流場分析作好了準(zhǔn)備。 近年來，計算流體力學(xué)（CFD）技術(shù)已經(jīng)成功地運用于數(shù)值模擬分析離心泵內(nèi)部流場，本文在前面參數(shù)化建模的基礎(chǔ)上，以FLUENT軟件計算分析了雙吸式離心泵內(nèi)部流場，同時對葉輪優(yōu)化方案進行了探討。 本文的研究結(jié)果有： (1)以流場分析為目的，分析研究了葉輪流場區(qū)域的建模方案； (2)采用參數(shù)化技術(shù)建模，大幅度減少了葉輪設(shè)計人員的重復(fù)工作，提高了設(shè)計生產(chǎn)效率； (3)在參數(shù)化建模的基礎(chǔ)上，采用商業(yè)軟件FLUENT對雙吸式離心泵內(nèi)部流場進行了分析，為后續(xù)雙吸式離心泵葉輪參數(shù)優(yōu)化提供了計算依據(jù)。計算結(jié)果表明，本文采用FLUENT軟件對離心泵葉輪內(nèi)部流場進行分析是可行的； (4)在參數(shù)化建模的基礎(chǔ)上，對葉輪優(yōu)化方案進行了探討。對于本文的研究的低比轉(zhuǎn)速離心泵，在葉輪內(nèi)添加偏置短葉片可以大幅度提高離心泵的揚程，同時大量的數(shù)值計算表明，短葉片的添加會在一定程度上減小尾流區(qū)域，但并不一定會使離心泵的水力學(xué)性能提高。本文研究對象的偏置短葉片最佳入口直徑為370mm，此時揚程提升9.96%，水力學(xué)效率提高0.74%。
[Abstract]:Impeller is the key component of centrifugal pump. Its design speed and hydraulic performance directly affect the development cycle and competitiveness of the product. In order to reduce the hydraulic performance verification and optimization cost of centrifugal pump impeller, the parameterized modeling method is used to greatly reduce the time of modeling, and the flow field in centrifugal pump impeller is simulated by FLUENT software to save test cost. This paper is based on double suction centrifugal pump impeller, on the premise of knowing the impeller CAD technology at home and abroad in detail, aiming at the deficiency of double suction impeller at present, adopting parameterized modeling technology, on the SolidWorks software platform. The parameterized design software of double suction centrifugal pump is developed to prepare for the flow field analysis of impeller. In recent years, the computational fluid dynamics (CFD) technique has been successfully applied to the numerical simulation and analysis of the flow field in the centrifugal pump. Based on the previous parameterized modeling, the internal flow field of the double suction centrifugal pump has been calculated and analyzed by FLUENT software. At the same time, the optimization scheme of impeller is discussed. The results of this paper are as follows: 1) for the purpose of flow field analysis, the modeling scheme of impeller flow field region is analyzed and studied. 2) Parametric modeling is adopted, which greatly reduces the repeated work of impeller designers and improves the efficiency of design and production. On the basis of parameterized modeling, the internal flow field of double suction centrifugal pump is analyzed by commercial software FLUENT, which provides a basis for the optimization of impeller parameters of double suction centrifugal pump. The results show that it is feasible to analyze the internal flow field of centrifugal pump impeller by FLUENT software. On the basis of parametric modeling, the optimization scheme of impeller is discussed. For the centrifugal pump with low specific speed studied in this paper, the head of centrifugal pump can be greatly improved by adding bias short blade to the impeller, and a large number of numerical calculations show that the addition of short blade can reduce the wake area to a certain extent. But it does not necessarily improve the hydraulic performance of centrifugal pumps. The optimum inlet diameter of the bias short blade is 370 mm, the lift is 9.96 and the hydraulic efficiency is 0.74 mm.
【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH311

【參考文獻】

相關(guān)期刊論文 前10條

1 楊樹耕,陳越,騰明清;海洋平臺工程數(shù)據(jù)庫與三維實體建模技術(shù)研究[J];船舶工程;2003年05期

2 李國威;王巖;呂秀麗;李文華;;偏置分流葉片離心泵內(nèi)流動機理及仿真分析[J];東北農(nóng)業(yè)大學(xué)學(xué)報;2011年05期

3 羅晟,蔡兆麟;變?nèi)~片數(shù)和長短葉片結(jié)構(gòu)對離心葉輪內(nèi)三維粘性流場的影響[J];風(fēng)機技術(shù);2000年06期

4 齊學(xué)義;邵元忠;李鳳成;劉永明;王飛;;用正交法研究短葉片對水輪機空化性能的影響[J];水利與建筑工程學(xué)報;2010年06期

5 張瑤;羅先武;丁華;王鑫;許洪元;;基于BVF流場診斷的高比轉(zhuǎn)速離心泵葉輪優(yōu)化[J];工程熱物理學(xué)報;2010年05期

6 孫志剛;胡良軍;何平;李文;譚春青;;Eckardt葉輪二次流與射流尾跡結(jié)構(gòu)研究[J];工程熱物理學(xué)報;2011年12期

7 齊學(xué)義,倪永燕;復(fù)合式離心泵葉輪短葉片偏置設(shè)計分析[J];甘肅工業(yè)大學(xué)學(xué)報;2003年04期

8 黎義斌;張德勝;趙偉國;敏政;;葉片數(shù)及分流葉片位置對離心泵性能的影響[J];蘭州理工大學(xué)學(xué)報;2008年02期

9 曹國強,梁冰,包明宇;基于FLUENT的葉輪機械三維紊流流場數(shù)值模擬[J];機械設(shè)計與制造;2005年08期

10 張峰,李兆前,黃傳真;參數(shù)化設(shè)計的研究現(xiàn)狀與發(fā)展趨勢[J];機械工程師;2002年01期

本文編號：1951091