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针对偏置导流墙氧化沟复杂结构的特点,采用计算流体力学数值模型和Fluent计算方法,将导流墙偏置距沿径向从0至1m,间隔0.25m进行偏置距位置变化,对氧化沟流场进行了数值计算模拟。研究结果表明:导流墙的偏置距设置对改善隔墙背后的水流低速区和消除污泥沉积有促进作用,但当导流墙的偏置距增加到一定值时,在隔墙背后径向半宽处会形成第二个水流低速区。在比较不同导流墙偏置距的速度曲线基础上,认为导流墙的偏置距应设置在0.3m～0.4m之间较合适,从而为偏置导流墙的合理设计提供理论依据。
According to the characteristics of the complex structure of the oxidation ditch of the offset guide wall, the offset distance of the guide wall is changed from 0 to 1m in the radial direction at an interval of 0.25m by using the computational fluid dynamics numerical model and the Fluent calculation method. Oxidation ditch flow field numerical simulation. The results show that the offset distance of the guide wall can improve the low velocity area and eliminate sludge deposition behind the partition wall. However, when the offset distance of the guide wall increases to a certain value, Half-width will form a second low-speed flow area. On the basis of comparing the velocity curves of offset wall with different diversion walls, it is considered that the offset distance of diversion wall should be set between 0.3m and 0.4m, so as to provide a theoretical basis for the rational design of offset diversion wall.