低水头坝消力池内悬栅辅助消能工的优化试验研究
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摘要
用基于捆绑法的40组正交试验对消力池内悬栅辅助消能工的不同空间布置形式进行水力特性研究,提出同层相邻悬栅采用变距布置以及上下两层相邻悬栅采用倾斜布置的新型布置方式。试验结果表明:(1)同层悬栅采用变距布置能有效减小水位差同时保证消能率,相较等距布置水位差变化率平均提高12.15%;(2)上下相邻悬栅采用倾斜布置对于等距、变距布置均有利于减小水位差,其中前倾布置形式最优,对等距布置水位差变化率最大提高48.76%,变距布置最大提高10.71%,该试验中捆绑后的6组悬栅间距分别为8、8、8、12、12、4 cm的前倾布置形式为最优设计。
A supplementary energy dissipater of suspension beam arrays in a low head stilling basin is examined in this study using an experiment of 40 orthogonal tests and a bundling method,focusing on its hydrodynamic characteristics under different beam arrangements including a new arrangement featured with a variable beam spacing and inclined beam installation between the upper and lower arrays.The results show that variation in beam spacing reduces water head or increases energy dissipation rate effectively,thereby leading to an increase of 12.15% in the in-basin water head variation relative to that of fixed spacing.And the inclined beam schemes generally help reduce water head in the cases of fixed and variable spacing,but forward inclination is better allowing the in-basin water head variation of possibly 48.76% and 10.71% larger in the two cases respectively.From the experiment,we obtained the optimal designs-forward inclined beams of spacing 8,8,8,12,12 and 4 cm in six bundled tests respectively.
A supplementary energy dissipater of suspension beam arrays in a low head stilling basin is examined in this study using an experiment of 40 orthogonal tests and a bundling method,focusing on its hydrodynamic characteristics under different beam arrangements including a new arrangement featured with a variable beam spacing and inclined beam installation between the upper and lower arrays.The results show that variation in beam spacing reduces water head or increases energy dissipation rate effectively,thereby leading to an increase of 12.15% in the in-basin water head variation relative to that of fixed spacing.And the inclined beam schemes generally help reduce water head in the cases of fixed and variable spacing,but forward inclination is better allowing the in-basin water head variation of possibly 48.76% and 10.71% larger in the two cases respectively.From the experiment,we obtained the optimal designs-forward inclined beams of spacing 8,8,8,12,12 and 4 cm in six bundled tests respectively.
引文
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[17]Zheng Y R,Deng C J,Wang J L.The study of slip line field and upper bound method based on associated flow and non-associated flow rules[J].Engineering Sciences,2010,8(3):21-40.
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[19]刘瑞江,张业旺,闻崇炜,等.正交试验设计和分析方法研究[J].试验技术与管理,2010,27(9):52-55.LIU Ruijiang,ZHANG Yewang,WEN Chongwei,et al.Study on the design and analysis methods of orthogonal experiment[J].Experimental Technology and Management,2010,27(9):52-55.(in Chinese)
[20]胡建军,周冀衡,柴家荣,等.多指标正交试验数据的优化分析及应用[J].中国烟草学报,2008,14(2):9-14.HU Jianjun,ZHOU Jiheng,CHAI Jiarong,et al.Analysis and optimization of data from orthogonal experiments[J].Acta Tabacaria Sinica,2008,14(2):9-14.(in Chinese)
[2]杨吉健,刘韩生,文明宜,等.台阶式溢洪道阶顶过流断面弗劳德数沿程变化研究[J].水力发电学报,2015,34(6):112-116.YANG Jijian,LIU Hansheng,WEN Mingyi,et al.Study on relative Froude number over steps of stepped spillways[J].Journal of Hydroelectric Engineering,2015,34(6):112-116.(in Chinese)
[3]杨凡,王均星,陈帅,等.低弗劳德数水流辅助消能工空蚀问题研究[J].水力发电学报,2015,34(2):125-129.YANG Fan,WANG Junxing,CHEN Shuai,et al.Study on cavitation damages of supplementary dissipater under low-Froude-number flows[J].Journal of Hydroelectric Engineering,2015,34(2):125-129.(in Chinese)
[4]王海阳,傅宗甫.超低弗劳德数闸下消能试验[J].水利水电科技进展,2007,27(6):73-76.WANG Haiyang,FU Zongfu.Experiments on under sluice energy dissipation at ultra-low Froude number[J].Advances in Science and Technology of Water Resources,2007,27(6):73-76.(in Chinese)
[5]黄朝煊,王贺瑶,王正中,等.消力池最不利条件下池深极值探讨[J].水力发电学报,2015,34(1):79-84.HUANG Chaoxuan,WANG Heyao,WANG Zhengzhong,et al.Investigation of extremum depth of sluice stilling basin under the most unfavorable conditions[J].Journal of Hydroelectric Engineering,2015,34(1):79-84.(in Chinese)
[6]张志昌,傅铭焕,李若冰.波状床面消力池共轭水深和水跃长度的计算[J].水力发电学报,2014,33(5):120-127.ZHANG Zhichang,FU Minghuan,LI Ruobing.Calculation of conjugate depths and length of jump on corrugated beds of stilling basins[J].Journal of Hydroelectric Engineering,2014,33(5):120-127.(in Chinese)
[7]岳鹏博,周赤,姜伯乐,等.底流消力池空化特性探讨[J].水力发电学报,2013,32(6):104-107.YUE Pengbo,ZHOU Chi,JIANG Bole,et al.Discussion on cavitation characteristics of bottom flow stilling basin[J].Journal of Hydroelectric Engineering,2013,32(6):104-107.(in Chinese)
[8]朱玲玲.底流消力池内悬栅消能工布置型式对消能效果影响研究[D].乌鲁木齐:新疆农业大学,2014.ZHU Lingling.Energy dissipation influence on arrangement type of energy dissipator suspension grid in underflow energy dissipation basin[D].Urumqi:Xinjiang Agricultural University,2014.(in Chinese)
[9]张建民,王玉蓉,杨永全.陡坡弯道水流悬栅(板)消能特性测试研究[J].水利水电技术,2002,33(3):1-2.ZHANG Jiangmin,WANG Yurong,YANG Yongquan.Energy dissipation of flow with hanged-grid and hangedplate in slope-curve channel[J].Water Resources and Hydropower Engineering,2002,33(3):1-2.(in Chinese)
[10]杨庆,戴光清,侯杰,等.悬栅水流流场测试及消能分析[J].水利水电技术,2004,35(4):92-95.YANG Qing,DAI Guangqing,HOU Jie,et al.Measurement of velocity field around hanging-grid in slope channel and analysis of dissipation[J].Water Resources and Hydropower Engineering,2004,35(4):92-95.(in Chinese)
[11]侯杰,赵涛,牧振伟,等.悬栅消能工水力特性研究[J].水力发电,2004,30(1):36-39.HOU Jie,ZHAO Tao,MU Zhenwei,et al.Study on the hydraulic characteristics of suspension grider[J].Water Power,2004,30(1):36-39.(in Chinese)
[12]吴战营.消力池内辅助消能工试验研究及数值模拟[D].乌鲁木齐:新疆农业大学,2013.WU Zhangying.Experimental study and numerical simulation of auxiliary energy dissipater in stilling pool[D].Urumqi:Xinjiang Agricultural University,2013.(in Chinese)
[13]蒋健楠,牧振伟,张佳祎.消力池内双层悬栅对消能效果影响试验研究[J].水资源与水工程学报,2015,26(3):157-160.JIANG Jiannan,MU Zhenwei,ZHANG Jiayi.Experiment on impact of double suspended grid on energy dissipation effect in stilling pool[J].Journal of Water Resources&Water Engineering,2015,26(3):157-160.(in Chinese)
[14]蒋健楠,牧振伟,张佳祎,等.基于均匀正交设计的消力池内双层悬栅布置优化试验[J].中国水利水电科学研究院学报,2015,13(5):357-362.JIANG Jiannan,MU Zhenwei,ZHANG Jiayi,et al.Double suspended grid layout optimization test in the absorption basin based on the uniform orthogonal design[J].Journal of China Institute of Water Resources and Hydropower Research,2015,13(5):357-362.(in Chinese)
[15]蒋健楠,牧振伟,牛涛,等.消力池内双层悬栅不同布置类型的压强特性研究[J].中国农村水利水电,2017(2):135-139.JIANG Jiannan,MU Zhenwei,NIU Tao,et al.Research on the double suspension girder in different types of pressure characteristics in the stilling basin[J].China Rural Water and Hydropower,2017(2):135-139.(in Chinese)
[16]贾萍阳,牧振伟,温世杰,等.消力池内双层悬栅不同布置优化试验研究[J].新疆农业大学学报,2016,39(4):332-337.JIA Pingyang,MU Zhenwei,WEN Shijie,et al.Experimental study on optimization of different arrangement of double layer suspended grid in the stilling basin[J].Journal of Xinjiang Agriculture University,2016,39(4):332-337.(in Chinese)
[17]Zheng Y R,Deng C J,Wang J L.The study of slip line field and upper bound method based on associated flow and non-associated flow rules[J].Engineering Sciences,2010,8(3):21-40.
[18]Wu S Q.A branch bound method for subset sum problem[J].Acta Mathematicae Applicatae Sinica(English Series),1994(3):302-314.
[19]刘瑞江,张业旺,闻崇炜,等.正交试验设计和分析方法研究[J].试验技术与管理,2010,27(9):52-55.LIU Ruijiang,ZHANG Yewang,WEN Chongwei,et al.Study on the design and analysis methods of orthogonal experiment[J].Experimental Technology and Management,2010,27(9):52-55.(in Chinese)
[20]胡建军,周冀衡,柴家荣,等.多指标正交试验数据的优化分析及应用[J].中国烟草学报,2008,14(2):9-14.HU Jianjun,ZHOU Jiheng,CHAI Jiarong,et al.Analysis and optimization of data from orthogonal experiments[J].Acta Tabacaria Sinica,2008,14(2):9-14.(in Chinese)