THREE-DIMENSIONAL TURBULENCE NUMERICAL SIMULATION OF A STEPPED SPILLWAY OVERFLOW

查看全文 作　　者：[1]CHENQun;DAIGuang-[2]qing;ZHUFen-[3]qing;[2]YANGQing

机构地区：[1]CollegeofHydraulicandHydroelectricEngineering,SichuanUniversity,Chengdu610065,China;[2]StateKeyHydraulicsLaboratoryofHighSpeedFlows,SichuanUniversity,Chengdu610065,China;[3]GeotechnicEngineeringCo.,theSecondSurveyandDesignInstituteofRailway,Chengdu610031,China

出　　处：《Journal of Hydrodynamics》索引2004年第16卷第1期,共6页

基　　金：theNationalNaturalScienceFoundationofChina.(GrantNo :5 98790 13) 摘　　要：In this paper, the k-ε two-equation turbulence model was used to simulate the three-dimensional turbulent flow of the stepped spillway at the Yubeishan reservoir. In order to solve the curved free water surface and to handle the complex boundary conditions, the fractional Volume Of Fluid (VOF) model that is applicable to the solution of the stratified two-phase flow was intorduced to the k-ε turbulence model and the unstructured grid was used for the discretization of the irregular simulation domain. By these methods, the turbulent flow field of the stepped spillway was simulated successfully. The location of the free surface along the spillway, the magnitude and distribution of the velocity, the pressure distribution on the step surface, the turbulence kinetic energy and turbulence dissipation rate were obtained by simulation. The changes and distributions of these characteristics along the width of the spillway were also obtained. The energy dissipation ratio of the stepped spillway was calculated according to the upstream and downstream water depth and velocities. 关键词：湍流模型湍流数值模拟 VOF模型双相流分级溢洪道水力学

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THREE-DIMENSIONAL TURBULENCE NUMERICAL SIMULATION OF A STEPPED SPILLWAY OVERFLOW

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