期刊论文

Study on Water Flow Characteristics of Superelevation Transition Section of Freeway under Rainfall Conditions

中文

计算机仿真

1006-9348

2023

40

12

186-192

10.3969/j.issn.1006-9348.2023.12.033

本校为第一机构

为研究降雨下道路超高过渡段水流特性,利用Fluent流体仿真软件建立了高速公路路面水流的仿真模型,采用RNG k-ε模型求解流体域,DPM模型和EWF模型耦合计算实现降雨和降雨收集过程的模拟.在验证了模型可行性的条件下,分析了超高过渡段路面水膜厚度及水流路径长度随降雨强度、纵坡、超高渐变率等的变化规律.结果表明,路表水膜厚度随降雨强度的增大而增大,随纵坡和超高渐变率的增大而减小;最长水流路径长度随纵坡的增大而增长,随超高渐变率的增大而减小,但与降雨强度无关.在总体趋势上水膜厚度会随着水流路径的长度增加而增加.最后基于4mm的临界水膜厚度,给出了水流路径长度的控制值,在设计时可以通...

In order to study the flow characteristics of superelevation transition section under rainfall,a simulation model of freeway surface water flow was established using Fluent fluid simulation software.RNG k-ε model was used to solve the fluid domain,and the a coupling calcalation between the DPM model and the EWF model was used to simulate the rainfall and rainfall collection processes.Under the condition of verifying the feasibility of the model,the variation rules of pavement water film thickness and flow path length with rainfall intensity,lo...