南京工业大学学报（自然科学版）2024，Vol.46Issue(1)：74-83,10.DOI:10.3969/j.issn.1671-7627.2024.01.009
多级液体分布器流动特性分析
Analysis of flow characteristics of multistage liquid distributor
摘要
Abstract
The treatment efficiency of the new wastewater treatment process is greatly affected by flow field perturbation in reaction pools,primarily caused by the outflow uniformity and the turbulence intensity at the outlet pores in liquid distributors.At present,research on the uniform water distribution by distributors is sparse,and the synergistic mechanism between the orifice resistance characteristics and the along-stream resistance characteristics in submerged flow has not yet been revealed.In this paper,a multi-stage liquid distributor structure with a gradient change in aperture diameter was proposed and applied in a demonstration project.A finite element analysis method for the submerged flow liquid distribution device,based on the species transport model,was established.Numerical simulation results were compared with the test results.It showed that the maximum average deviation of the chloride ion concentration in the two test planes was 1.97％,and the finite element simulation yielded a Christiansen's uniformity coefficient of 89.1％for the multi-stage liquid distributor.During the influent process,both the test and finite element simulation showed consistent trends in the change of the new influent quality fraction and the results were aligning well with each other.This proved that the new wastewater reactor structure was feasible enough to meet the requirements for engineering applications.关键词
多级液体分布器/管路/扰流/物质传输/均匀性/污水反应池/克里斯琴森均匀系数Key words
multi-stage liquid distributor/pipe/turbulence/species transport/uniformity/sewage reaction pool/Christiansen's uniformity coefficient分类
交通工程引用本文复制引用
杜百会,朱晓磊,陆晓峰,程可,许雪乔,吴远远,赵玉..多级液体分布器流动特性分析[J].南京工业大学学报（自然科学版）,2024,46(1):74-83,10.基金项目
国家自然科学基金(11772147) （11772147）
国家自然科学基金国家重大科研仪器研制项目(12027901) （12027901）
