基于SST k-ω湍流模型的泵站侧向进水流态改善研究

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 SST k-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 SST k-ω turbulence model in Flu-ent.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.