侧槽式溢洪道水流的紊流数值模拟研究  

Research on Turbulent Numerical Simulation of Side-channel Spillway

作　　者：刘发智[1] 张法星[1] 王超[2] 陈荣刚[1] 李瑶[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 [2]中国水电顾问集团成都勘测设计研究院,四川成都610072

出　　处：《水电能源科学》2011年第4期95-98,共4页Water Resources and Power

基　　金：国家自然科学基金资助项目(50978173);四川大学青年教师科研启动基金资助项目(2009SCU11072);"十一五"国家科技支撑计划基金资助项目(2008BAB29B04)

摘　　要：针对侧槽式溢洪道侧槽段水流大尺度的横向旋涡、回卷表层水流与由溢流堰下泄水流相互作用后掺气、沿主流方向平均流速分布不规则的问题,采用RNGκ-ε紊流模型对侧槽式溢洪道水力特性进行了三维数值模拟,并与物理模型试验结果进行了对比,获得了水流流态、水面线、压强和流速等水力参数的分布特征。结果表明,计算值与实测值相吻合,该方法有效可行。According to the large-scale transverse vortexes of the flow in the side-channel section,the aeration caused by the interaction of the surface rollback flow and the discharge flow over the weir,and the irregular distribution of downstream velocity.In this paper,RNG turbulence model is applied to simulate three-dimensional hydraulic characteristics of side-channel spillway.Comparing numerical results with experimental data of physical model,the distribution characteristics of the hydraulics parameters,including the flow pattern,water surface profile,pressure and the velocity,are obtained.It shows that the calculation results are consistent with the observation vaule,which verifies the feasible and effective of the RNG turbulence model.

关 键 词：数值模拟 VOF法 侧槽溢洪道 水力特性 

分 类 号：TV135.2[水利工程—水力学及河流动力学]