【摘要】：采用雷諾時(shí)均方程(RANS),選擇S-A湍流模型,運(yùn)用SIMPLEC算法,利用CFD數(shù)值模擬技術(shù),數(shù)值模擬了不同方案的運(yùn)西水電站水輪機(jī)流道內(nèi)流場(chǎng),分析了轉(zhuǎn)輪直徑、葉片翼型、葉片個(gè)數(shù)、葉片安放角、轉(zhuǎn)輪輪轂、轉(zhuǎn)輪轉(zhuǎn)速、導(dǎo)葉翼型、導(dǎo)葉軸線與機(jī)組中心線夾角、導(dǎo)葉個(gè)數(shù)、葉片及導(dǎo)葉安裝位置、導(dǎo)葉開度對(duì)水輪機(jī)性能的影響,葉片數(shù)為3時(shí)水輪機(jī)裝置性能較優(yōu),機(jī)組最高效率點(diǎn)分別在轉(zhuǎn)速為187.5r/min、導(dǎo)葉個(gè)數(shù)為15時(shí)出現(xiàn)。對(duì)原有流道可改變部件做適當(dāng)優(yōu)化后,將優(yōu)化后的轉(zhuǎn)輪應(yīng)用于電站進(jìn)行數(shù)值計(jì)算,根據(jù)全流道的數(shù)值模擬結(jié)果,預(yù)測(cè)電站改造后機(jī)組的水力性能。根據(jù)數(shù)值計(jì)算的結(jié)果制作模型水輪機(jī)和真機(jī)進(jìn)行模型試驗(yàn)和真機(jī)測(cè)試。結(jié)果表明,數(shù)值模擬結(jié)果與模型實(shí)驗(yàn)以及現(xiàn)場(chǎng)運(yùn)行結(jié)果曲線的變化趨勢(shì)一致,數(shù)值模擬結(jié)果基本能夠準(zhǔn)確反映電站的外特性和內(nèi)部流場(chǎng)特征。
[Abstract]:The S-A turbulence model is chosen by using the Reynolds time average equation (RANS), and the SIMPLEC algorithm is used to simulate the flow field in the turbine runner of the Yunxi Hydropower Station with different schemes by using the CFD numerical simulation technique. The diameter of the runner and the blade airfoil are analyzed. The influence of blade number, blade placement angle, wheel hub, wheel speed, guide blade airfoil, angle between guide vane axis and center line of unit, number of guide vane, installation position of blade and guide vane, and guide vane opening on the performance of hydraulic turbine. The performance of the turbine unit is better when the number of blades is 3. The maximum efficiency point of the unit is 187.5 r / min, and the number of guide vane is 15:00. After the proper optimization of the original runner can be changed, the optimized runner is applied to the numerical calculation of the power station. According to the numerical simulation results of the full channel, the hydraulic performance of the unit after the transformation of the power station is predicted. According to the results of numerical calculation, model turbine and real machine are made for model test and real machine test. The results show that the numerical simulation results are consistent with those of the model experiments and the field operation results. The numerical simulation results can reflect the external characteristics and internal flow field characteristics of the power station accurately.
【作者單位】： 江蘇大學(xué)流體機(jī)械工程技術(shù)研究中心;江蘇省灌溉總渠管理處;
【基金】：江蘇省水利廳科技項(xiàng)目(2014021)~~
【分類號(hào)】：TK733

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉敏;周大慶;吳國(guó)穎;陳會(huì)向;王惠芝;;超低水頭軸流式水輪機(jī)CFD優(yōu)化及流動(dòng)特性研究[J];水電能源科學(xué);2016年01期

2 楊正東;袁聰;;淮安二站水泵改型測(cè)試與驗(yàn)證[J];江蘇水利;2015年05期

3 張曉東;余世敏;龔彥;楊文武;周權(quán);;基于Bezier曲線的渦輪葉片參數(shù)化造型及優(yōu)化設(shè)計(jì)[J];機(jī)械強(qiáng)度;2015年02期

4 石麗建;湯方平;謝榮盛;齊立龍;楊正東;;基于CFD計(jì)算的軸流泵改型設(shè)計(jì)和效果[J];農(nóng)業(yè)工程學(xué)報(bào);2015年04期

5 馮俊;鄭源;李玲玉;;超低水頭豎井貫流式水輪機(jī)三維湍流數(shù)值模擬[J];人民長(zhǎng)江;2012年21期

6 徐磊;陸林廣;陳偉;王剛;;豎井貫流泵裝置水力設(shè)計(jì)方案比較研究[J];水力發(fā)電學(xué)報(bào);2011年05期

7 林其文;;豎井貫流式水輪機(jī)組的設(shè)計(jì)[J];中國(guó)制造業(yè)信息化;2011年17期

8 嚴(yán)登豐;;推薦采用繞流管法測(cè)定泵站流量[J];南水北調(diào)與水利科技;2011年02期

9 鄭源;劉君;陳陽(yáng);李璽;楊雪林;;基于Fluent的貫流泵數(shù)值模擬[J];排灌機(jī)械工程學(xué)報(bào);2010年03期

10 肖玉平;鄭源;江如漢;劉美琴;劉君;;豎井式貫流泵裝置的數(shù)值模擬與優(yōu)化[J];水電能源科學(xué);2010年02期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 龔彥;張曉東;張也;李一嵐;張津;;基于奇點(diǎn)分布法的渦輪鉆具葉型設(shè)計(jì)[J];西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2017年03期

2 戴景;戴啟t，

本文編號(hào)：2385070