摘要
Abstract
Taking the plunger type water filling valve of a certain high head maintenance gate as the research object,using Fluent software to establish a numerical simulation area by using gravity driven transient analysis method and tracking the fluid interface through VOF method,simulating the flow state of the water outlet of the water filling valve,and drawing the velocity vector cloud map,water volume fraction cloud map,as well as the pressure and velocity time history curves of the monitoring point S1 at the outlet of the water filling valve.The influence of the outlet elevation of the water filling valve on the fluid flow field was analyzed from a hydraulic perspective.The results showed that the lower the outlet elevation of the water filling valve,the faster the flow state of the water flow behind the valve reached stability;If the outlet elevation of the water filling valve is too high,the high-speed water flow at the outlet may block the ventilation holes for a long time and multiple times,seriously affecting the discharge of airflow,resulting in flow field turbulence,high energy consumption,and the inability to dissipate the vortex structure.This research result provides a reference basis for the arrangement of filling valves for high head maintenance gates at home and abroad.关键词
充水阀/出口高程/流场流态/速度矢量/稳定时间Key words
water filling valve/outlet elevation/fow field/velocity vector/stability time分类
水利科学
