表孔泄洪闸前漩涡数值模拟研究  

Numerical Simulation Study of the Vortex Phenomenon in front of the Surficial Discharge Sluice

作　　者：黄国兵[1] 石梦丽 胡晗[1] HUANG Guobing;SHI Mengli;HU Han(Institute of Hydraulics, Changjiang River Scientific Research Institute, Wuhan 430010, China)

机构地区：[1]长江科学院水力学所,湖北武汉430010

出　　处：《水电与新能源》2021年第9期11-16,共6页Hydropower and New Energy

基　　金：国家自然科学基金项目(51879013);国家重点研发计划项目(2016YFC0401904);中央级公益性科研院所基本科研业务费专项(CKSF2019394/GC)。

摘　　要：针对某大(1)型水电站泄洪时表孔闸前出现立轴漩涡现象,利用VOF(volume of fluid)方法对进口漩涡等水力特性进行了数值模拟计算,据此分析了坝前漩涡出现的原因、变化趋势等,初步探讨了漩涡对坝体泄洪结构的影响,提出了减弱表孔门槽及闸首部位出现有害漩涡的调度方案。During the flood discharge process of a large hydropower station,vertical-axis vortex phenomenon is observed in front of the surficial discharge sluice.The hydraulic characteristics of this phenomenon is studied by numerical simulation with the volume of fluid(VOF)method.The causes and variation trend of the vortex are analyzed.The influences of the vortex on the flood discharge structure of the dam are discussed.A dispatching plan is then proposed to reduce the harmful vortex in the surficial sluice gate slots and the sluice head.

关 键 词：泄洪表孔 数值模拟 立轴漩涡 涡量分布 掺气率 

分 类 号：TV66[水利工程—水利水电工程]