坎深和入池能量对跌坎型底流消能工流态影响的数值模拟  

Numerical Simulation on the Influence of Step-down Depth and Intake Energy to the Flow Pattern of Step-down Hydraulic Jump Dissipater

作　　者：冯国一[1] 王海军[2] 唐涛[1] 

机构地区：[1]南水北调中线干线工程建设管理局,北京100053 [2]昆明理工大学,昆明650051

出　　处：《南水北调与水利科技》2008年第2期69-71,共3页South-to-North Water Transfers and Water Science & Technology

基　　金：云南省自然科学基金(项目编号:2006A0018M)

摘　　要：跌坎型底流消能工是建立在常规底流消能工基础上的一种消能方式,相对于常规底流消能工能有效降低消力池的临底水力学指标。本文采用RNGk-ε双方程紊流模型进行数值模拟;数值计算采用SIMPLE算法的改进的算法PISO算法;对于自由水面线,采用VOF方法对进行追踪模拟。并对计算结果与物理模型观测值进行了对比,两者结果具有较好的一致性。The step-down hydraulic jump dissipater, as a conventional hydraulic jump dissipater,is more effective in reducing the hydraulic index of the baffle basin than the conventional hydraulic jump dissipater. The paper adopts the RNG κ-ε double equation turbulent model to process thenumerical simulation and the numerical value is calculated through adopting the PISO calculation which is improved from the SIMPLE calculation. Meanwhile,the method of VOF is adopted to have simulation on the surface profile and the results of calculation and model observation are compared so that the results are more consistent.

关 键 词：底流消能 数值模拟 跌坎型消能工 

分 类 号：TV135.2[水利工程—水力学及河流动力学]