重庆大学学报2024，Vol.47Issue(12)：24-34,11.DOI:10.11835/j.issn.1000-582X.2024.251
基于FLUENT的截污干渠设计参数对末端TP质量浓度的影响
Influence of FLUENT-based design parameters of sewage interception trunk on total phosphorus concentration at the trunk endpoint
摘要
Abstract
As agricultural non-point source runoff is transported to a wastewater treatment plant by the sewage interception trunk around Dianchi Lake,the total phosphorus(TP)concentration decreases along the way,often falling below the designed influent concentration at the trunk's endpoint.This reduction can result in non-compliance with discharge standards.To explore the influence of key design parameters on endpoint TP concentration and provide technical guidance for sewage interception trunk design,this study focuses on granular phosphorus from agricultural runoff transported by a well-designed sewage interception trunk on the eastern bank of Dianchi Lake.Using the three-dimensional simulation software FLUENT,a multiphase flow model was constructed to stimulate the fluid flow process within the trunk.The influences of section shape,roughness,hydraulic diameter,and slope on the endpoint TP concentration were analyzed.Results show that the endpoint TP concentration is lowest for circular cross sections and highest for trapezoidal sections.As roughness increases,TP concentration rises across all section shapes,with the smallest variation range in rectangular sections,and the largest in circular sections.Increasing hydraulic diameter or slope results in increased or decreased TP concentration for rectangular or trapezoidal sections,while in circular sections,TP concentration either decreases or shows minimal change.关键词
TP质量浓度/农村农业面源/截污干渠/设计参数/多相流数值模拟Key words
total phosphorus/agricultural runoff/interception trunk canal/design parameters/multiphase flow numerical simulation分类
资源环境引用本文复制引用
曾祥平,付楠楠,丁文川,唐鑫如,吴思,曾晓岚,张玉,罗万申..基于FLUENT的截污干渠设计参数对末端TP质量浓度的影响[J].重庆大学学报,2024,47(12):24-34,11.基金项目
重庆大学大型仪器设备开放基金项目(202303150125). Supported by the Open Fund Project for Large-scale Instrument of Chongqing University(202303150125). （202303150125）
