| 黄河下游花园口-夹河滩河段二维洪水模拟 |
| |
| 引用本文： | 万洪涛,周成虎,吴应湘,万庆.黄河下游花园口-夹河滩河段二维洪水模拟[J].水科学进展,2002,13(2):215-222. |
| |
| 作者姓名： | 万洪涛 周成虎 吴应湘 万庆 |
| |
| 作者单位： | 1.中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室, 北京, 100101; |
| |
| 基金项目： | 中国科学院知识创新工程领域前沿项目(XIOG-DOO-5);"九五"国家重中之重攻关项目(95-B02-02-02)资助 |
| |
| 摘 要： | 黄河下游花园口至夹河滩河段系典型的游荡型河段.在该河段,黄河大堤内范围宽广,一般洪水频率年份,水流主要限制在主槽内,因此大堤内分布有不少居民点以及纵横交错的保护居民点的生产堤和不少高于地面的灌溉渠堤和公路,使洪水行洪范围受到了很大的限制.当洪峰流量很大时,洪水将造成生产堤溃决,极大地危害滩区居民的生活.因此,设计模拟模型计算网格时需要考虑大堤、生产堤、明显高于地面的道路等阻水建筑物的影响,使这些堤及公路成为计算格网的边.不规则四边形网格能够很好地拟合黄河这种复杂的计算域.数值模拟时采用有限体积法,为确保通量的单向性,文中使用Osher格式计算通量.通过对1982年洪水的模拟,模拟结果表明了模型的合理性.
|
| 关 键 词： | 二维洪水数值模拟 黄河下游 不规则网格 有限体积法 Osher格式 |
| 文章编号： | 1001-6791(2002)02-0215-08 |
| 收稿时间： | 2000-05-25 |
| 修稿时间： | 2000年5月25日 |
2-D flood simulation of the lower Yellow River from Huayuankou to Jiahetan |
| |
| WAN Hong-tao,ZHOU Cheng-hu,WU Ying-xiang,WAN Qing.2-D flood simulation of the lower Yellow River from Huayuankou to Jiahetan[J].Advances in Water Science,2002,13(2):215-222. |
| |
| Authors: | WAN Hong-tao ZHOU Cheng-hu WU Ying-xiang WAN Qing |
| |
| Affiliation: | 1.LREIS, Institute of Geography, CAS, Beijing 100101, China;2.Department of Applied Fluid Mechanics, Institute of Mechanics, CAS, Beijing 100080, China |
| |
| Abstract: | The lower Yellow River reach from Huayuankou to Jiahetan is a typical wandering river. The generation of computational mesh,which is used to simulate the flood,is affected by the distribution of water works in the river channel. The spatial information about the two Yellow River banks,the protecting dykes,and these roads that is obviously higher than the ground are need to be used to generate the computational mesh. As a result these dykes and roads must be located in the element interface of the computational mesh. In the model the finite-volume method is used to solve the shallow wave equations and the Osher scheme is used to calculate the flux through the interface between the neighbor element. The flood event with peak discharge of 15 300 m3/s,occurred in the period from July 30 to August 10,1982,is simulated1 The estimated result indicates that the simulation method is good. |
| |
| Keywords: | 2-D flood simulation the lower Yellow River irregular and unstructured mesh finite volume method Osher scheme |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
|
点击此处可从《水科学进展》下载全文 |
|
