基于Lattice Boltzmann方法的济南市城区暴雨洪水模型

发布时间：2018-01-31 13:05

本文关键词： 城市雨洪模型济南市城区 Lattice Boltzmann方法 GIS　出处：《水电能源科学》2016年06期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:In order to simulate the flood movement characteristics of "flooding from south to north" in Jinan, a flood model considering both flood and street flood was constructed. In order to judge the accuracy of the model, the Lattice Boltzmann method is used in the hydrodynamic calculation of the model. The calculation results of the model are compared with the measured data of Huangtaiqiao hydrologic station on Xiaoqing River, and the survey water depth of the vulnerable point on the important road is taken as the reference data. Compared with the measured data and the investigated water depth, the simulation results of the model are better, and the Lattice Boltzmann method is used in the calculation of the river channel confluence due to the flood in the streets and lanes. The computational efficiency is greatly improved compared with the traditional hydrodynamic calculation method.
【作者单位】：山东省水利工程管理局;河海大学水文水资源学院;中国水利水电科学研究院水资源研究所;
【基金】：水利部公益性行业科研专项经费项目(200801033)
【分类号】：TV122.1
【正文快照】： 1引言济南市地处鲁中南低山丘陵与鲁西北冲击平原的交接带,城区南北高差大,中心城区低洼,以经一路为界,经一路以南以26‰~5‰的坡比向北延伸,经一路以北地势平坦。由于黄河河床高于地表,形成了北园、大明湖一带的低洼区域,而小清河则成为济南市唯一的排水出路。这种特殊的地形

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