The interception facility is a key structure in water pollution control.To investigate the fluid movement and the determination method of interception capacity in different interceptor facilities,pilot test,and computational fluid dynamics simulation were conducted.The results of fluid motion analysis showed that the narrowing effect of the overflow section made different water flow characteristics in the interceptor,which can be divided into wide top weir flow stage,gate hole free flow stage,gate hole flooded flow stage,and full tube with pressure flow stage.The water blocking and flow turning of the weir make the weir-type interceptor prone to siltation at the side away from the interceptor.The slot interceptor was influenced by the falling water of the slot,and the water flow fragmentation and a large amount of gas doping occurred,increasing the water loss;the slot and weir interceptor were mainly influenced by the slot,when the ratio of the weir to the slot was less than 1.2,and the influence of the weir dominated when the ratio was greater than 1.4.In this study,combined with hydrodynamics and mathematical analysis,the determination methods of interception capacity of different types of interceptors are derived.
关键词
截流设施/截流能力/流体运动/计算流体力学/中试试验
Key words
intercepting weir facility/interception capacity/fluid movement/computational fluid dynamics/pilot test
维普
万方数据