水力发电学报2012，Vol.31Issue(2)：87-94,8.
抽水蓄能电站竖式进/出水口CFD水力优化
Simulation and optimization of flow characteristics in vertical inlet/outlet of pumped-storage power station by CFD method
摘要
Abstract
Flows through the vertical inlets/outlets of the upper basin of a pumped-storage power station are always poorly distributed in pumping conditions due to a bend.This does harm to operation stability and efficiency of the station.To improve outflow uniformity,this paper proposes several modifications to the bend and inlet/outlet shapes through CFD simulations.We draw some rules of design effects on the flow by analyzing shape parameters and comparing modified shapes,and then propose an optimized scheme.This design scheme adopts an adverse bend connected to the original bend and a flow-guiding long conical structure,and it was verified effective in achieving an outflow profile uniform along radial and vertical directions.The scheme was applied to an actual power station and was shown successful in eliminating severe outflow imbalance and back-flow that existed in the original scheme.关键词
水力学/CFD/抽水蓄能电站/竖式进/出水口/流态分析Key words
hydraulics/CFD/pumped-storage power station/vertical inlet/outlet/fluid flow simulation分类
建筑与水利引用本文复制引用
张晓曦,程永光,刘畅..抽水蓄能电站竖式进/出水口CFD水力优化[J].水力发电学报,2012,31(2):87-94,8.基金项目
国家自然科学基金 （）
