论文部分内容阅读
为能够较好地模拟济南市遭遇强降雨时“南水北淹”的洪水运动特点,构建了一个既考虑淹没又考虑街巷洪水的城市雨洪模型,并在模型中的水动力学计算部分采用了Lattice Boltzmann方法。为判断模型精度,将模型的计算结果与该模型唯一控制站点小清河上黄台桥水文站的实测数据进行比较,并将重要道路上易受淹点的调查水深作为参考数据。结果表明,与实测数据和调查水深相比,该模型模拟结果较好,且由于在街巷洪水、河道汇流计算部分采用了Lattice Boltzmann方法,计算效率较传统的水动力学计算方法得到大幅提高。
In order to simulate the characteristics of flood in “South-North Water Diversion ” during heavy rains in Jinan City, a model of urban rainfall-flood considering both flooding and street-side flooding was constructed. The model of hydrodynamics The calculation part uses the Lattice Boltzmann method. In order to judge the accuracy of the model, the calculation results of the model are compared with the measured data of Huangtaiqiao Hydrologic Station on Xiaoqing River, which is the only control site of the model, and the surveyed depth of vulnerable flooding points on important roads is taken as reference data. The results show that compared with the measured data and the depth of investigation, the simulation result of this model is good. And because of the Lattice Boltzmann method in the calculation of street flow and river confluence, the calculation efficiency of calculation efficiency is greatly improved compared with the traditional hydrodynamic calculation method.