基于Flow-3D软件的消能池三维水流数值模拟  

Three-dimensional numerical simulation of flow in stilling basin based on Flow-3D

作　　者：王月华[1] 包中进[1] 王斌[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020

出　　处：《武汉大学学报（工学版）》2012年第4期454-457,476,共5页Engineering Journal of Wuhan University

基　　金：2010年水利部"948"项目(编号:201027)

摘　　要：基于Flow-3D软件,采用RNG k-ε三维水流数学模型、VOF方法和单相流体模拟消能池水流流动,应用GMRES方法求解离散方程.根据设计提出的闸下三级消能池方案,不仅验证了水闸的泄流能力,还计算了消能工况水流条件下消能池的水流情况,并且结合水工模型试验具体分析了消能池中的水流流态、流速分布、水面线和消能率等水力特性.结果显示计算的泄流能力、水流流态与模型试验的非常接近,流速和水面线的吻合度也很高.计算结果还提供了Fr值、紊动能分布图和流速矢量图,比较全面地反映了三级消能池的水流和消能情况,同时也表明该软件模型具有可行性与实用性.Based on Flow-3D software,the flow downstream of the sluices are simulated by using RNG k-ε turbulence flow model,VOF method and single-phase fluid.A method called GMRES is used to solve discrete equation.Discharge capacity of the sluice has been verified.The flow state,flow velocity distribution,water surface profile as well as the energy dissipation ratio in stilling basin have been analyzed according to design of the stilling basin and hydraulic model test.The results of computation are in good agreement with the experimental data.Besides,Froude number,turbulent energy and velocity vector diagram are also provided,which make more comprehensive understanding of flow of the stilling basin and also show that this model is greatly possible and practical.

关 键 词：消能池 RNGk-ε紊流数学模型 VOF方法 三维数值模拟 

分 类 号：TV131.4[水利工程—水力学及河流动力学]