基于SST k-ω湍流模型的泵站侧向进水流态改善研究
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摘要
泵站侧向进水前池中易形成不良流态,为了改善不良流态,以Fluent为平台,采用SSTk-ω湍流模型,研究了某侧向进水排涝泵站的进水水力特性,通过定性与定量分析,得出了最佳的导流墩布置方案,有效地改善了该泵站前池的不良流态.分析结果表明,侧向进水前池中,由于水流侧向流入,进水前池各纵向断面的流态不是对称分布的,设置导流墩分配水流时,应根据工程实际情况适当调整;针对漩涡产生的位置设置导流墩,能有效地消除漩涡,改善进水流态.
Poor flow parttern always happens in the forebay of side-inlet pumping station.In order to improve the flow parttern,a side-inlet pump station has been studied by using the SSTk-ωturbulence model in Fluent.A best scheme of diversion piers layout is obtained by qualitative and quantitative analysis;therefore the flow parttern is improved remarkably.The results indicate that due to the flow parttern is not symmetrical in side-inlet pumping station,the scheme of diversion piers should be arranged according to the specific situation of project;the diversion piers aimed at the swirl could remove the swirl effectively so as to improve the flow parttern.
Poor flow parttern always happens in the forebay of side-inlet pumping station.In order to improve the flow parttern,a side-inlet pump station has been studied by using the SSTk-ωturbulence model in Fluent.A best scheme of diversion piers layout is obtained by qualitative and quantitative analysis;therefore the flow parttern is improved remarkably.The results indicate that due to the flow parttern is not symmetrical in side-inlet pumping station,the scheme of diversion piers should be arranged according to the specific situation of project;the diversion piers aimed at the swirl could remove the swirl effectively so as to improve the flow parttern.
引文
[1]冯卫民,于永海.水泵及水泵站[M].5版.北京:中国水利水电出版社,2016.
[2]徐辉,张林.侧向进水泵站前池整流技术研究综述[J].水利水电科技进展,2008,28(6):84-88.
[3]Kim J J,Baik J J.A Numerical Study of the Effects of Ambient Wind Direction on Flow and Dispersion in Urban Street Canyons Using the RNG k-εTurbulence Model[J].Atmospheric Environment,2004,38(19):3039-3048.
[4]屈磊飞,王林锁,陈松山,等.闸站合建枢纽泵站三维水流的数值模拟[J].水利与建筑工程学报,2006,4(1):15-17.
[5]于永海,徐辉.程永光.泵站前池导流板整流措施数值模拟研究[J].水利水电技术,2006,37(9):41-43.
[6]于永海,成斌.侧向引水及进水泵站进水流态CFD模拟分析与优化[J].水利水电技术,2012,43(2):72-75.
[7]刘超,韩旭,周济人,等.泵站侧向进水引河段三维紊流数值模拟[J].排灌机械工程学报,2009,27(5):281-286.
[8]Menter F R.Zonal Two Equation k-ωTurbulence Models for Aerodynamic Flows[R].AIAA-93-2906,1993.
[9]周宇,钱炜祺,邓有奇,等.k-ωSST两方程湍流模型中参数影响的初步分析[J].空气动力学学报,2010,28(2):213-217.
[10]张林,于永海,徐辉.侧向进水城市排水泵站配水池水力优化设计[J].中国给水排水,2008,24(8):37-40.
[2]徐辉,张林.侧向进水泵站前池整流技术研究综述[J].水利水电科技进展,2008,28(6):84-88.
[3]Kim J J,Baik J J.A Numerical Study of the Effects of Ambient Wind Direction on Flow and Dispersion in Urban Street Canyons Using the RNG k-εTurbulence Model[J].Atmospheric Environment,2004,38(19):3039-3048.
[4]屈磊飞,王林锁,陈松山,等.闸站合建枢纽泵站三维水流的数值模拟[J].水利与建筑工程学报,2006,4(1):15-17.
[5]于永海,徐辉.程永光.泵站前池导流板整流措施数值模拟研究[J].水利水电技术,2006,37(9):41-43.
[6]于永海,成斌.侧向引水及进水泵站进水流态CFD模拟分析与优化[J].水利水电技术,2012,43(2):72-75.
[7]刘超,韩旭,周济人,等.泵站侧向进水引河段三维紊流数值模拟[J].排灌机械工程学报,2009,27(5):281-286.
[8]Menter F R.Zonal Two Equation k-ωTurbulence Models for Aerodynamic Flows[R].AIAA-93-2906,1993.
[9]周宇,钱炜祺,邓有奇,等.k-ωSST两方程湍流模型中参数影响的初步分析[J].空气动力学学报,2010,28(2):213-217.
[10]张林,于永海,徐辉.侧向进水城市排水泵站配水池水力优化设计[J].中国给水排水,2008,24(8):37-40.