重庆大学学报2025，Vol.48Issue(6)：1-13,13.DOI:10.11835/j.issn.1000-582X.2024.261
道路大排水交叉口流场高精度降维表征模型
A high-precision low-order intersection flow distribution model for road major drainage
摘要
Abstract
During extreme rainfall events,urban roads can function as surface runoff conduits when integrated with drainage systems,providing a cost-effective flood mitigation solution.However,the lack of reliable computational tools for modeling flow diversion at road intersections makes it challenging to accurately estimate drainage flow,limiting broader application of this technique.This study focuses on T-shaped intersections in urban road networks and conducts both hydraulic experiments and computational fluid dynamics(CFD)simulations under three distinct downstream boundary conditions:free outflow,backwater at the main road end,and backwater at both road ends.Based on the obtained data,a high-precision,low order flow diversion model for intersections is developed,with a calculation error basically within±15%.The proposed model provides a simple and practical tool for engineering applications and can be seamlessly integrated into the widely used one-dimensional urban hydrological model SWMM(storm water management model).This integration significantly enhances the accuracy of flow distribution calculations at intersection nodes,enabling more precise design of the large-scale road major drainage system.关键词
内涝防治/极端降雨/道路大排水/交叉口/计算流体力学Key words
waterlogging prevention/extreme storm/road major drainage system/intersections/CFD分类
建筑与水利引用本文复制引用
邵知宇,任宇亭,孙卓,徐雷,冯旺,张琦,龚华凤,柴宏祥..道路大排水交叉口流场高精度降维表征模型[J].重庆大学学报,2025,48(6):1-13,13.基金项目
国家自然科学基金(面上)资助项目(52070027).Supported by National Natural Science Foundation of China(General Program)(52070027). （面上）
