圆中环沉沙排沙过滤池数值模拟研究

圆中环沉沙排沙过滤池是一种新型的浑水沉沙、排沙、过滤装置，为水沙分离提供了另一种新的思路。通过新疆呼图壁城镇工业供水工程圆中环沉沙排沙过滤池的局部断面数值模拟试验，初步了解了其下部沉沙池流场分布情况。入水口区域附近存在顺时针方向的漩涡区，且能量较大，对局部范围处的流态影响较大。出水口处即过滤槽进水口处流速较大，符合实际规律。充分验证了在选取过滤料粒径范围时，考虑大粒径压重的必要性。通过FLUENT计算得到了沉沙池内的清水流速矢量图和流速等值线图等水力参数。进一步说明了沉沙池数值模拟的可行性，对类似的工程设计、施工及运行管理有一定的参考价值。

Numerical Simulation on Sediment Desilting Filter of Circular Ring

Abstract: Circular Ring of sediment desilting filter is a new type desilting and filtrating equipment, it can provide a new method to separate sand with water. The essay preliminary research the flow field distribution of sand basin below which based on the local section numerical simulation of settling, sediment and filtering in urban industrial supply water project of Hutu town, Xinjiang. In the water inlet area nearby, there is whirlpool zone clockwise and large energy and it have a greater influence on the flow pattern of local place. Water outlet area which is a inlet of filter tank has a larger flow velocity and meet rule actual. This paper fully verified that it’s necessary for consider the large particle size which can ballasting when selecting particle size range of filter material. Hydraulic parameters of the velocity vector diagram and the velocity contour diagram of water in the settling basin can be computed by the FLUENT software. Further illustrate the feasibility of numerical simulation of setting basin, it’s has the certain reference value for the similar engineering design, construction and operation management.