氧化沟导流墙体型研究分析

Research and Analysis of the Shape of Oxidation Ditch Diversion Wall

提出了一种新型的非等厚度导流墙。用数值模拟的方法研究了新体型导流墙氧化沟内的流速场,与常用等厚度半圆体型导流墙氧化沟内的流速场进行比较。研究结果表明,在同等边界条件下,新体型导流墙能够更好地改善氧化沟弯道水流流态,减小隔墙末端回流区域的大小,并能增加沟道内高流速区域所占的比例,同时也能提高水流流速大于0.3 m/s区域所占的比例。

A new type of non-equal thickness diversion wall is suggested in this paper,the numerical simulation method is used to study the flow velocity field within the oxidation ditch of the new type of diversion wall.Also,the comparison is made between the results with the flow velocity field within the oxidation ditch of semi-circle type of diversion wall with common equal thickness.The research results indicate that under the same boundary conditions,the new shape type of diversion wall is able to improve the water flow patterns in the oxidation ditch bent,to reduce the size of the backflow area at the end of diversion wall,to increase the percentage of the high-velocity region within the ditch channel and at the same time,to raise the percentage of the region with the high-velocity flow over 0.3 m/s.