期刊文献+

河道、滞洪区洪水演进数学模型 被引量:39

Numerical Model of Flood Propagation of Rivers and Flood Detention Basin
下载PDF
导出
摘要 采用有限体积法建立了适应河道、滞洪区复杂情况的洪水演进一、二维衔接数学模型.构造了适合河道洪水计算的一、二维河道型网格和滞洪区二维地面型网格,网格具有多点、多面,既镶嵌又衔接的特点.阻水建筑物对洪水演进速度影响较大,所以,将其模化成特殊通道,提出了洪水演进过程中渗流所造成的水体损失的计算模式.将该模型应用于大清河滞洪区,讨论了洪水边界条件,确定了模型糙率,率定了模型渗流参数.结合大清河"96.8实测洪水资料"进行了洪水演进数值模拟,分别对河道的水位、流量和滞洪区来水时间进行了模型验证,验证结果基本吻合. The 1D and 2D numerical combination model adapted to the complicated situation of flood propagation of rivers and flood detention area was built by finite volume method (FVM) .The model grids included the river grid and ground grid, which connected each other point to point and face to face. By modeling blocking building to special channel, the numerical mode for the water loss of seepage was suggested. The model was applied to Daqinghe detention basin, in which flood boundary conditions were discussed, the roughness of model was confirmed, and seepage coefficient was rated. The propagation of the diversion flood in Daqinghe detention basin in August, 1996 was simulated successfully and the model verification results were satisfactory, which contained the verification results of water level, flow in rivers and water reaching time in detention basin.
出处 《天津大学学报》 EI CAS CSCD 北大核心 2009年第1期47-55,共9页 Journal of Tianjin University(Science and Technology)
关键词 滞洪区 洪水演进 一、二维衔接数学模型 有限体积法 渗流 flood detention area flood propagation 1D and 2D numerical combination model finite volume method seepage
  • 相关文献

参考文献12

二级参考文献23

  • 1胡四一,谭维炎.无结构网格上二维浅水流动的数值模拟[J].水科学进展,1995,6(1):1-9. 被引量:56
  • 2谭维炎,胡四一,王银堂,徐承隆,仲志余,胡维忠.长江中游洞庭湖防洪系统水流模拟——Ⅰ.建模思路和基本算法[J].水科学进展,1996,7(4):336-345. 被引量:38
  • 3何少苓 王连祥.窄缝法在二维边界变动水域计算中的应用[J].水利学报,1986,(12):11-19.
  • 4槐文信.抛物型偏微分方程的有限分析方法[J].武汉水利电力大学学报,1989,22(3):19-27.
  • 5谢任之.溃坝水力学[M].济南:山东科学技术出版社,1990..
  • 6李光炽,河海大学学报,1995年,1期,36页
  • 7程文辉,华东水利学院学报,1985年,3期,60页
  • 8李慧珑,水文预报与计算,1982年
  • 9李大鸣,博士学位论文,1996年
  • 10韦达 托梅,抛物问题Galerkin有限元法,1986年,184页

共引文献194

同被引文献276

引证文献39

二级引证文献224

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部